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Update type for PeriodDtype / DatetimeTZDtype / IntervalDtype #22938

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@TomAugspurger
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commented Oct 2, 2018

Split from PeriodArray.

Updating the type to be the more correct Period.

Also removed the essentially unused IntervalDtypeType. If this doesn't break anything, it seems like there are decent chunks of _get_dtype_type that aren't being hit, aside from test__get_dtype_type.

TomAugspurger added some commits Oct 2, 2018

Update type for PeriodDtype
Removed unused IntervalDtypeType
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commented Oct 2, 2018

Hello @TomAugspurger! Thanks for submitting the PR.

@TomAugspurger TomAugspurger added this to the 0.24.0 milestone Oct 2, 2018

@TomAugspurger TomAugspurger added the Dtypes label Oct 2, 2018

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commented Oct 2, 2018

Codecov Report

Merging #22938 into master will decrease coverage by <.01%.
The diff coverage is 93.75%.

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@@            Coverage Diff             @@
##           master   #22938      +/-   ##
==========================================
- Coverage   92.19%   92.19%   -0.01%     
==========================================
  Files         169      169              
  Lines       50822    50820       -2     
==========================================
- Hits        46855    46852       -3     
- Misses       3967     3968       +1
Flag Coverage Δ
#multiple 90.6% <93.75%> (-0.01%) ⬇️
#single 42.36% <68.75%> (-0.01%) ⬇️
Impacted Files Coverage Δ
pandas/core/dtypes/base.py 100% <ø> (ø) ⬆️
pandas/core/dtypes/common.py 95.03% <100%> (+0.01%) ⬆️
pandas/core/dtypes/dtypes.py 95.82% <87.5%> (-0.3%) ⬇️

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@@ -1907,18 +1908,18 @@ def _get_dtype_type(arr_or_dtype):
elif isinstance(arr_or_dtype, DatetimeTZDtype):
return DatetimeTZDtypeType
elif isinstance(arr_or_dtype, IntervalDtype):
return IntervalDtypeType
return Interval

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@jreback

jreback Oct 2, 2018

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this is really changing the semantics

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@TomAugspurger

TomAugspurger Oct 2, 2018

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Which semantics?

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@jreback

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all the other dtypes return the meta class
now you are returning the actual class (and not even the type)

this is not right

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@jorisvandenbossche

jorisvandenbossche Oct 2, 2018

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This is what we have been doing for all EAs.

Now in practice, I don't if we ever rely on the value, though?

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I agree that am not sure this is actually used. But If you are chaning, try changing for all the dtypes? (or don't change). that's what I mean by semantics, we neeed to be consistent.

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@TomAugspurger

TomAugspurger Oct 2, 2018

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From the ExtensionArray docs

        """The scalar type for the array, e.g. ``int``

        It's expected ``ExtensionArray[item]`` returns an instance
        of ``ExtensionDtype.type`` for scalar ``item``.
        """

Period is the scalar type for arrays with PeriodDtype, in the sense that isinstance(periodarray[0], Period) is true. What's the issue?

now you are returning the actual class (and not even the type)

Classes are types (they can be used as the second argument to isinstance).

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TomAugspurger Oct 2, 2018

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But If you are chaning, try changing for all the dtypes? (or don't change)

We discussed earlier change CategoricalDtype.type to be object, but IIRC that was rejected (I don't recall the specifics).

Happy to change DatetimeTZDtypeType (to Timestamp).

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@jreback

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can you see if we have tests that hit any of this? (if not pls add). happy to change to either way, but should just change all.

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tests/dtypes/test_common.py::test__get_dtype_type hits this. Otherwise, the only path to here seems to be _get_dtype_or_type.

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@jorisvandenbossche

jorisvandenbossche Oct 2, 2018

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And even then, for EA's it is actually never used in _get_dtype_or_type (I mean, there is no check function relying on that value, only for numpy dtypes)

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commented Oct 2, 2018

Something that just occurred to me: We have types where "missing" is represented by a value that isn't an instance of the type. e.g. NaT, the missing value for Datetime and Period, isn't an instance of Timestamp or Period. Interval uses np.nan.

Should the interface define that a missing value for a dtype be an instance of the type? It's not clear to me that it should. Are people OK with saying that NA values are allowed to be other types?

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commented Oct 2, 2018

Should the interface define that a missing value for a dtype be an instance of the type? It's not clear to me that it should. Are people OK with saying that NA values are allowed to be other types?

Well, currently I think almost none of our actual EAs have an na_value of their type, so I think that clearly answers the question?
I also don't see how it is possible to have this in general, as you don't always have control over the scalar type.

elif isinstance(arr_or_dtype, PeriodDtype):
return PeriodDtypeType
return Period
elif isinstance(arr_or_dtype, string_types):
if is_categorical_dtype(arr_or_dtype):
return CategoricalDtypeType

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same here

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commented Oct 2, 2018

this change still seems wrong

e.g.

In [1]: np.dtype('float64').type
Out[1]: numpy.float64

In [2]: type(np.dtype('float64').type)
Out[2]: type

is what we are emulating here. This is a wholesale change of this. I am not sure why you actually need to do this. Having a concrete type (e.g. a Period) rather a type(class), e.g. the type of the class is semantically correct here. I cannot believe this doesn't break anything.

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commented Oct 2, 2018

Your code shows that this PR is doing the right thing.

In [3]: np.array([1, 2]).dtype.type
Out[3]: numpy.int64

In [4]: type(np.array([1, 2]).dtype.type)
Out[4]: type

In [6]: pd.core.arrays.period.PeriodArray([1, 2], 'D').dtype.type
Out[6]: pandas._libs.tslibs.period.Period

In [7]: type(pd.core.arrays.period.PeriodArray([1, 2], 'D').dtype.type)
Out[7]: type
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commented Oct 2, 2018

why do you need to change at all? what exactly is breaking on master?

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commented Oct 2, 2018

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commented Oct 2, 2018

I cannot believe this doesn't break anything.

Because we actually never use this / rely on this. Or at least, only use dtype.type when .dtype is a numpy dtype.

We discussed before that the ExtensionDtype.type was more "pro forma" and not really doing anything (at the moment).

But if we keep it, I agree with Tom that we should at least have our internal EA dtypes to be consistent with the interface (which is what this PR is doing).

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commented Oct 2, 2018

so i am not against changing for code cleanliness and maybe i am pounding sand here

but this makes EA dtypes inconsistent with numpy dtypes

now it probably doesn’t make any practical difference but maybe let’s change the text that they are (not a real numpy dtype)

they will now not even pretend to be a duck like numpy dtype at all

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commented Oct 2, 2018

@jorisvandenbossche jorisvandenbossche changed the title Update type for PeriodDtype Update type for PeriodDtype / DatetimeTZDtype / IntervalDtype Oct 3, 2018

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commented Oct 3, 2018

but this makes EA dtypes inconsistent with numpy dtypes

@jreback does
#22938 (comment) make sense? On master we're inconsistent with numpy, since for these types .type isn't the scalar type of the array.

In code that's

In [2]: arr = np.array([1, 2])

In [3]: assert type(arr[0]) == arr.dtype.type

In [4]: parr = pd.PeriodIndex([2000, 2001], freq="D")

In [5]: assert type(parr[0]) == parr.dtype.type
---------------------------------------------------------------------------
AssertionError                            Traceback (most recent call last)
<ipython-input-5-2e0cefc2b29e> in <module>
----> 1 assert type(parr[0]) == parr.dtype.type

AssertionError:

In [6]: type(parr[0]), parr.dtype.type
Out[6]: (pandas._libs.tslibs.period.Period, pandas.core.dtypes.dtypes.PeriodDtypeType)
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commented Oct 3, 2018

Only failure here is the S3 failure, which was hopefully resolved on master.

elif isinstance(arr_or_dtype, PeriodDtype):
return PeriodDtypeType
return Period
elif isinstance(arr_or_dtype, string_types):
if is_categorical_dtype(arr_or_dtype):

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what was rationale for not making this object for Categorical here? otherwise this is the odd man out

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I don't recall the previous discussion, but: categorical can basically be everything (so object would still be generic, that is true), but object is actually not a proper callable like the other types (you cannot do object(1), like you can do int(1), np.int64(1), or Period(..) ), so it doesn't follow the scheme.

In principle we could pass through the type of the categories, but the problem is that those can be None.

Since the type is actually never used (for the extension dtypes), I would also not bother too much about this one inconsistency.

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Joris is correct.

The only additional comment is that having a .type of object doesn't really tell you anything useful. But something like Period, Interval, or Timestamp actually is meaningful.

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so why don't we return None then? I think it is going to be very confusing that only Categorical as a DtypeType, but nothing else does. If you are getting rid of it, then remove it completely.

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None has the same drawbacks of object (cannot be called, is overly generic, does not hold any useful information). The CategoricalDtypeType at least has in its name it is the type of the CategoricalDtype

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Agreed with Joris.

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ok, then

@jreback

jreback approved these changes Oct 4, 2018

@jreback jreback merged commit fe67b94 into pandas-dev:master Oct 4, 2018

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@TomAugspurger TomAugspurger deleted the TomAugspurger:period-dtype-type branch Oct 4, 2018

TomAugspurger added a commit to TomAugspurger/pandas that referenced this pull request Oct 9, 2018

Squashed commit of the following:
commit c9d6e89
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:34:22 2018 -0500

    xpass -> skip

commit 95d5cbf
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:22:17 2018 -0500

    typo, import

commit 4e9b7f0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:18:40 2018 -0500

    doc update

commit cc2bfc8
Merge: 11a0d93 fe67b94
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:15:46 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit fe67b94
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:55:09 2018 -0500

    Update type for PeriodDtype / DatetimeTZDtype / IntervalDtype (pandas-dev#22938)

commit b12e5ba
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:30:29 2018 -0500

    Safer is dtype (pandas-dev#22975)

commit c19c805
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:27:54 2018 -0500

    Catch Exception in combine (pandas-dev#22936)

commit d553ab3
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:24:06 2018 +0200

    TST: Fixturize series/test_combine_concat.py (pandas-dev#22964)

commit 4c78b97
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:39 2018 +0200

    TST: Fixturize series/test_constructors.py (pandas-dev#22965)

commit 45d3bb7
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:20 2018 +0200

    TST: Fixturize series/test_datetime_values.py (pandas-dev#22966)

commit f1a22ff
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:22:21 2018 +0200

    TST: Fixturize series/test_dtypes.py (pandas-dev#22967)

commit abf68fd
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:21:45 2018 +0200

    TST: Fixturize series/test_io.py (pandas-dev#22972)

commit e6b0c29
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:20:46 2018 +0200

    TST: Fixturize series/test_missing.py (pandas-dev#22973)

commit 9b405b8
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Thu Oct 4 13:16:28 2018 +0200

    CLN: values is required argument in _shallow_copy_with_infer (pandas-dev#22983)

commit c282e31
Author: h-vetinari <33685575+h-vetinari@users.noreply.github.com>
Date:   Thu Oct 4 03:34:35 2018 +0200

    Fix ASV import error (pandas-dev#22978)

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

jreback added a commit that referenced this pull request Oct 25, 2018

REF: Make PeriodArray an ExtensionArray (#22862)
* WIP: PeriodArray

* WIP

* remove debug

* Just moves

* PeriodArray.shift definition

* _data type

* clean

* accessor wip

* some more wip

* tshift, shift

* Arithmetic

* repr changes

* wip

* freq setter

* Added disabled ops

* copy

* Support concat

* object ctor

* Updates

* lint

* lint

* wip

* more wip

* array-setitem

* wip

* wip

* Use ._tshift internally for datetimelike ops

In preperation for PeriodArray / DatetimeArray / TimedeltaArray.

Index.shift has a different meaning from ExtensionArray.shift.

- Index.shift pointwise shifts each element by some amount
- ExtensionArray.shift shits the *position* of each value in the array
  padding the end with NA

This is going to get confusing. This PR tries to avoid some of that by
internally using a new `_tshift` method (time-shift) when we want to do pointwise
shifting of each value. Places that know they want that behavior (like in the
datetimelike ops) should use that.

* deep

* Squashed commit of the following:

commit 23e5cfc
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:10:41 2018 -0500

    Use ._tshift internally for datetimelike ops

    In preperation for PeriodArray / DatetimeArray / TimedeltaArray.

    Index.shift has a different meaning from ExtensionArray.shift.

    - Index.shift pointwise shifts each element by some amount
    - ExtensionArray.shift shits the *position* of each value in the array
      padding the end with NA

    This is going to get confusing. This PR tries to avoid some of that by
    internally using a new `_tshift` method (time-shift) when we want to do pointwise
    shifting of each value. Places that know they want that behavior (like in the
    datetimelike ops) should use that.

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (#22935)

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit bccfc3f
Merge: d65980e 9caf048
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:47:48 2018 -0500

    Merge remote-tracking branch 'upstream/master' into period-dtype-type

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (#22948)

commit d65980e
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:46:38 2018 -0500

    typo

commit e5c61fc
Merge: d7a8e1b 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:57:59 2018 -0500

    Merge remote-tracking branch 'upstream/master' into period-dtype-type

commit d7a8e1b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:57:56 2018 -0500

    Fixed

commit 598cc62
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:32:22 2018 -0500

    doc note

commit 83db05c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:28:52 2018 -0500

    updates

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (#22935)

commit f07ab80
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:22:27 2018 -0500

    str, bytes

commit 8a8bdb0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:40:59 2018 -0500

    import at top

commit 99bafdd
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:38:12 2018 -0500

    Update type for PeriodDtype

    Removed unused IntervalDtypeType

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* fixup

* The rest of the EA tests

* docs

* rename to time_shift

* Squashed commit of the following:

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit ee80803
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Wed Oct 3 08:25:44 2018 -0700

     BUG: Correctly weekly resample over DST (#22941)

    * test resample fix

    * move the localization until needed

    * BUG: Correctly weekly resample over DST

    * Move whatsnew to new section

commit fea27f0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Wed Oct 3 08:49:44 2018 -0500

    CI: pin moto to 1.3.4 (#22959)

commit 15d32bb
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 04:32:35 2018 -0700

    [CLN] Dispatch (some) Frame ops to Series, avoiding _data.eval (#22019)

    * avoid casting to object dtype in mixed-type frames

    * Dispatch to Series ops in _combine_match_columns

    * comment

    * docstring

    * flake8 fixup

    * dont bother with try_cast_result

    * revert non-central change

    * simplify

    * revert try_cast_results

    * revert non-central changes

    * Fixup typo syntaxerror

    * simplify assertion

    * use dispatch_to_series in combine_match_columns

    * Pass unwrapped op where appropriate

    * catch correct error

    * whatsnew note

    * comment

    * whatsnew section

    * remove unnecessary tester

    * doc fixup

commit 3e3256b
Author: alimcmaster1 <alimcmaster1@gmail.com>
Date:   Wed Oct 3 12:23:22 2018 +0100

    Allow passing a mask to NanOps (#22865)

commit e756e99
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 02:19:27 2018 -0700

    CLN: Use is_period_dtype instead of ABCPeriodIndex checks (#22958)

commit 03181f0
Author: Wenhuan <lixx0880@gmail.com>
Date:   Wed Oct 3 15:28:07 2018 +0800

    BUG: fix Series(extension array) + extension array values addition (#22479)

commit 04ea51d
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Wed Oct 3 09:24:36 2018 +0200

    CLN: small clean-up of IntervalIndex (#22956)

commit b0f9a10
Author: Tony Tao <34781056+tonytao2012@users.noreply.github.com>
Date:   Tue Oct 2 19:01:08 2018 -0500

    DOC GH22893 Fix docstring of groupby in pandas/core/generic.py (#22920)

commit 08ecba8
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Tue Oct 2 14:22:53 2018 -0700

    BUG: fix DataFrame+DataFrame op with timedelta64 dtype (#22696)

commit c44bad2
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:16:25 2018 -0400

    CLN GH22873 Replace base excepts in pandas/core (#22901)

commit 8e749a3
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:14:48 2018 -0400

    CLN GH22874 replace bare excepts in pandas/io/pytables.py (#22919)

commit 1102a33
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 22:31:36 2018 +0200

    DOC/CLN: clean-up shared_docs in generic.py (#20074)

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (#22948)

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (#22935)

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit 7714e79
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 10:13:06 2018 -0500

    Always return ndarray

commit 1921c6f
Merge: 01f7366 fea27f0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 09:50:30 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit fea27f0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Wed Oct 3 08:49:44 2018 -0500

    CI: pin moto to 1.3.4 (#22959)

commit 15d32bb
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 04:32:35 2018 -0700

    [CLN] Dispatch (some) Frame ops to Series, avoiding _data.eval (#22019)

    * avoid casting to object dtype in mixed-type frames

    * Dispatch to Series ops in _combine_match_columns

    * comment

    * docstring

    * flake8 fixup

    * dont bother with try_cast_result

    * revert non-central change

    * simplify

    * revert try_cast_results

    * revert non-central changes

    * Fixup typo syntaxerror

    * simplify assertion

    * use dispatch_to_series in combine_match_columns

    * Pass unwrapped op where appropriate

    * catch correct error

    * whatsnew note

    * comment

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    * doc fixup

commit 3e3256b
Author: alimcmaster1 <alimcmaster1@gmail.com>
Date:   Wed Oct 3 12:23:22 2018 +0100

    Allow passing a mask to NanOps (#22865)

commit e756e99
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 02:19:27 2018 -0700

    CLN: Use is_period_dtype instead of ABCPeriodIndex checks (#22958)

commit 03181f0
Author: Wenhuan <lixx0880@gmail.com>
Date:   Wed Oct 3 15:28:07 2018 +0800

    BUG: fix Series(extension array) + extension array values addition (#22479)

commit 04ea51d
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Wed Oct 3 09:24:36 2018 +0200

    CLN: small clean-up of IntervalIndex (#22956)

commit b0f9a10
Author: Tony Tao <34781056+tonytao2012@users.noreply.github.com>
Date:   Tue Oct 2 19:01:08 2018 -0500

    DOC GH22893 Fix docstring of groupby in pandas/core/generic.py (#22920)

commit 08ecba8
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Tue Oct 2 14:22:53 2018 -0700

    BUG: fix DataFrame+DataFrame op with timedelta64 dtype (#22696)

commit c44bad2
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:16:25 2018 -0400

    CLN GH22873 Replace base excepts in pandas/core (#22901)

commit 8e749a3
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:14:48 2018 -0400

    CLN GH22874 replace bare excepts in pandas/io/pytables.py (#22919)

commit 1102a33
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 22:31:36 2018 +0200

    DOC/CLN: clean-up shared_docs in generic.py (#20074)

commit 01f7366
Merge: 5372134 9caf048
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:50:28 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (#22948)

commit 5372134
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:35:07 2018 -0500

    fixed move

commit ce1a3c6
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:32:11 2018 -0500

    fixed move

commit b9c7e4b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:28:57 2018 -0500

    remove old note

commit a4a2933
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:24:48 2018 -0500

    handle test

commit be63feb
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:19:17 2018 -0500

    move test

commit 0eef0cf
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:18:18 2018 -0500

    move back

commit 2183f7b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:17:28 2018 -0500

    api

commit 85fc5d8
Merge: 9059c0d 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:15:52 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (#22935)

commit 9059c0d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:33:15 2018 -0500

    Note

commit 0c53f08
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:30:54 2018 -0500

    Imports

commit ce94bf9
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:28:16 2018 -0500

    Moves

commit fdd43c4
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:26:09 2018 -0500

    Closes #22850

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

* fixed merge conflict

* Handle divmod test

* extension tests passing

* Squashed commit of the following:

commit c9d6e89
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:34:22 2018 -0500

    xpass -> skip

commit 95d5cbf
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:22:17 2018 -0500

    typo, import

commit 4e9b7f0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:18:40 2018 -0500

    doc update

commit cc2bfc8
Merge: 11a0d93 fe67b94
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:15:46 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit fe67b94
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:55:09 2018 -0500

    Update type for PeriodDtype / DatetimeTZDtype / IntervalDtype (#22938)

commit b12e5ba
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:30:29 2018 -0500

    Safer is dtype (#22975)

commit c19c805
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:27:54 2018 -0500

    Catch Exception in combine (#22936)

commit d553ab3
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:24:06 2018 +0200

    TST: Fixturize series/test_combine_concat.py (#22964)

commit 4c78b97
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:39 2018 +0200

    TST: Fixturize series/test_constructors.py (#22965)

commit 45d3bb7
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:20 2018 +0200

    TST: Fixturize series/test_datetime_values.py (#22966)

commit f1a22ff
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:22:21 2018 +0200

    TST: Fixturize series/test_dtypes.py (#22967)

commit abf68fd
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:21:45 2018 +0200

    TST: Fixturize series/test_io.py (#22972)

commit e6b0c29
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:20:46 2018 +0200

    TST: Fixturize series/test_missing.py (#22973)

commit 9b405b8
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Thu Oct 4 13:16:28 2018 +0200

    CLN: values is required argument in _shallow_copy_with_infer (#22983)

commit c282e31
Author: h-vetinari <33685575+h-vetinari@users.noreply.github.com>
Date:   Thu Oct 4 03:34:35 2018 +0200

    Fix ASV import error (#22978)

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

* merge conflict

* wip

* indexes passing

* op names

* extension, arrays passing

* fixup

* lint

* Fixed to_timestamp

* Same error message for index, series

* Fix freq handling in to_timestamp

* dtype update

* accept kwargs

* fixups

* updates

* explicit

* add to assert

* wip period_array

* wip period_array

* order

* sort order

* test for hashing

* update

* lint

* boxing

* fix fixtures

* infer

* Remove seemingly unreachable code

* lint

* wip

* Updates for master

* simplify

* wip

* remove view

* simplify

* lint

* Removed add_comparison_methods

* xfail op

* remove some

* constructors

* Constructor cleanup

* misc fixups

* more xfails

* typo

* Added asi8

* Allow setting nan

* revert breaking docs

* Override _add_sub_int_array

* lint

* Update PeriodIndex._simple_new

* Clean up uses of .values, ._values, ._ndarray_values, ._data

* one more values

* remove xfails

* Fixed freq handling in _shallow_copy with a freq

* test updates

* API: Keep PeriodIndex.values an ndarray

* BUG: Raise for non-equal freq in take

* Punt on DataFrame.replace specializing

* lint

* fixed xfail message

* TST: _from_datetime64

* Fixups

- Perf in period_array
- pyarrow error
- py2 compat

* escape

* dtype

* revert and unxfail values

* error catching

* isort

* Avoid PeriodArray.values

* clarify _box_func usage

* TST: unxfail ops tests

* Avoid use of .values

* __setitem__ type

* Misc cleanups

* docstring on PeriodArray
* examples for period_array
* remove _box_values_as_index
* names
* object_dtype
* use __sub__

* lint

* API: remove ordinal from period_array

* catch exception

* misc cleanup

* Handle astype integer size

* Bump test coverage

* remove partial test

* close bracket

* change the test

* isort

* consistent _data

* lint

* ndarray_values -> asi8

* colocate ops

* refactor PeriodIndex.item

remove unused method

* return NotImplemented for Series / Index

* remove xpass

* release note

* types, use data

* remove ufunc xpass

brute4s99 added a commit to brute4s99/pandas that referenced this pull request Nov 19, 2018

REF: Make PeriodArray an ExtensionArray (pandas-dev#22862)
* WIP: PeriodArray

* WIP

* remove debug

* Just moves

* PeriodArray.shift definition

* _data type

* clean

* accessor wip

* some more wip

* tshift, shift

* Arithmetic

* repr changes

* wip

* freq setter

* Added disabled ops

* copy

* Support concat

* object ctor

* Updates

* lint

* lint

* wip

* more wip

* array-setitem

* wip

* wip

* Use ._tshift internally for datetimelike ops

In preperation for PeriodArray / DatetimeArray / TimedeltaArray.

Index.shift has a different meaning from ExtensionArray.shift.

- Index.shift pointwise shifts each element by some amount
- ExtensionArray.shift shits the *position* of each value in the array
  padding the end with NA

This is going to get confusing. This PR tries to avoid some of that by
internally using a new `_tshift` method (time-shift) when we want to do pointwise
shifting of each value. Places that know they want that behavior (like in the
datetimelike ops) should use that.

* deep

* Squashed commit of the following:

commit 23e5cfc
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:10:41 2018 -0500

    Use ._tshift internally for datetimelike ops

    In preperation for PeriodArray / DatetimeArray / TimedeltaArray.

    Index.shift has a different meaning from ExtensionArray.shift.

    - Index.shift pointwise shifts each element by some amount
    - ExtensionArray.shift shits the *position* of each value in the array
      padding the end with NA

    This is going to get confusing. This PR tries to avoid some of that by
    internally using a new `_tshift` method (time-shift) when we want to do pointwise
    shifting of each value. Places that know they want that behavior (like in the
    datetimelike ops) should use that.

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit bccfc3f
Merge: d65980e 9caf048
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:47:48 2018 -0500

    Merge remote-tracking branch 'upstream/master' into period-dtype-type

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (pandas-dev#22948)

commit d65980e
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:46:38 2018 -0500

    typo

commit e5c61fc
Merge: d7a8e1b 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:57:59 2018 -0500

    Merge remote-tracking branch 'upstream/master' into period-dtype-type

commit d7a8e1b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:57:56 2018 -0500

    Fixed

commit 598cc62
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:32:22 2018 -0500

    doc note

commit 83db05c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:28:52 2018 -0500

    updates

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit f07ab80
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:22:27 2018 -0500

    str, bytes

commit 8a8bdb0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:40:59 2018 -0500

    import at top

commit 99bafdd
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:38:12 2018 -0500

    Update type for PeriodDtype

    Removed unused IntervalDtypeType

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* fixup

* The rest of the EA tests

* docs

* rename to time_shift

* Squashed commit of the following:

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit ee80803
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Wed Oct 3 08:25:44 2018 -0700

     BUG: Correctly weekly resample over DST (pandas-dev#22941)

    * test resample fix

    * move the localization until needed

    * BUG: Correctly weekly resample over DST

    * Move whatsnew to new section

commit fea27f0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Wed Oct 3 08:49:44 2018 -0500

    CI: pin moto to 1.3.4 (pandas-dev#22959)

commit 15d32bb
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 04:32:35 2018 -0700

    [CLN] Dispatch (some) Frame ops to Series, avoiding _data.eval (pandas-dev#22019)

    * avoid casting to object dtype in mixed-type frames

    * Dispatch to Series ops in _combine_match_columns

    * comment

    * docstring

    * flake8 fixup

    * dont bother with try_cast_result

    * revert non-central change

    * simplify

    * revert try_cast_results

    * revert non-central changes

    * Fixup typo syntaxerror

    * simplify assertion

    * use dispatch_to_series in combine_match_columns

    * Pass unwrapped op where appropriate

    * catch correct error

    * whatsnew note

    * comment

    * whatsnew section

    * remove unnecessary tester

    * doc fixup

commit 3e3256b
Author: alimcmaster1 <alimcmaster1@gmail.com>
Date:   Wed Oct 3 12:23:22 2018 +0100

    Allow passing a mask to NanOps (pandas-dev#22865)

commit e756e99
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 02:19:27 2018 -0700

    CLN: Use is_period_dtype instead of ABCPeriodIndex checks (pandas-dev#22958)

commit 03181f0
Author: Wenhuan <lixx0880@gmail.com>
Date:   Wed Oct 3 15:28:07 2018 +0800

    BUG: fix Series(extension array) + extension array values addition (pandas-dev#22479)

commit 04ea51d
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Wed Oct 3 09:24:36 2018 +0200

    CLN: small clean-up of IntervalIndex (pandas-dev#22956)

commit b0f9a10
Author: Tony Tao <34781056+tonytao2012@users.noreply.github.com>
Date:   Tue Oct 2 19:01:08 2018 -0500

    DOC GH22893 Fix docstring of groupby in pandas/core/generic.py (pandas-dev#22920)

commit 08ecba8
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Tue Oct 2 14:22:53 2018 -0700

    BUG: fix DataFrame+DataFrame op with timedelta64 dtype (pandas-dev#22696)

commit c44bad2
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:16:25 2018 -0400

    CLN GH22873 Replace base excepts in pandas/core (pandas-dev#22901)

commit 8e749a3
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:14:48 2018 -0400

    CLN GH22874 replace bare excepts in pandas/io/pytables.py (pandas-dev#22919)

commit 1102a33
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 22:31:36 2018 +0200

    DOC/CLN: clean-up shared_docs in generic.py (pandas-dev#20074)

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (pandas-dev#22948)

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit 7714e79
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 10:13:06 2018 -0500

    Always return ndarray

commit 1921c6f
Merge: 01f7366 fea27f0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 09:50:30 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit fea27f0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Wed Oct 3 08:49:44 2018 -0500

    CI: pin moto to 1.3.4 (pandas-dev#22959)

commit 15d32bb
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 04:32:35 2018 -0700

    [CLN] Dispatch (some) Frame ops to Series, avoiding _data.eval (pandas-dev#22019)

    * avoid casting to object dtype in mixed-type frames

    * Dispatch to Series ops in _combine_match_columns

    * comment

    * docstring

    * flake8 fixup

    * dont bother with try_cast_result

    * revert non-central change

    * simplify

    * revert try_cast_results

    * revert non-central changes

    * Fixup typo syntaxerror

    * simplify assertion

    * use dispatch_to_series in combine_match_columns

    * Pass unwrapped op where appropriate

    * catch correct error

    * whatsnew note

    * comment

    * whatsnew section

    * remove unnecessary tester

    * doc fixup

commit 3e3256b
Author: alimcmaster1 <alimcmaster1@gmail.com>
Date:   Wed Oct 3 12:23:22 2018 +0100

    Allow passing a mask to NanOps (pandas-dev#22865)

commit e756e99
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 02:19:27 2018 -0700

    CLN: Use is_period_dtype instead of ABCPeriodIndex checks (pandas-dev#22958)

commit 03181f0
Author: Wenhuan <lixx0880@gmail.com>
Date:   Wed Oct 3 15:28:07 2018 +0800

    BUG: fix Series(extension array) + extension array values addition (pandas-dev#22479)

commit 04ea51d
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Wed Oct 3 09:24:36 2018 +0200

    CLN: small clean-up of IntervalIndex (pandas-dev#22956)

commit b0f9a10
Author: Tony Tao <34781056+tonytao2012@users.noreply.github.com>
Date:   Tue Oct 2 19:01:08 2018 -0500

    DOC GH22893 Fix docstring of groupby in pandas/core/generic.py (pandas-dev#22920)

commit 08ecba8
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Tue Oct 2 14:22:53 2018 -0700

    BUG: fix DataFrame+DataFrame op with timedelta64 dtype (pandas-dev#22696)

commit c44bad2
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:16:25 2018 -0400

    CLN GH22873 Replace base excepts in pandas/core (pandas-dev#22901)

commit 8e749a3
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:14:48 2018 -0400

    CLN GH22874 replace bare excepts in pandas/io/pytables.py (pandas-dev#22919)

commit 1102a33
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 22:31:36 2018 +0200

    DOC/CLN: clean-up shared_docs in generic.py (pandas-dev#20074)

commit 01f7366
Merge: 5372134 9caf048
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:50:28 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (pandas-dev#22948)

commit 5372134
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:35:07 2018 -0500

    fixed move

commit ce1a3c6
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:32:11 2018 -0500

    fixed move

commit b9c7e4b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:28:57 2018 -0500

    remove old note

commit a4a2933
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:24:48 2018 -0500

    handle test

commit be63feb
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:19:17 2018 -0500

    move test

commit 0eef0cf
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:18:18 2018 -0500

    move back

commit 2183f7b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:17:28 2018 -0500

    api

commit 85fc5d8
Merge: 9059c0d 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:15:52 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit 9059c0d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:33:15 2018 -0500

    Note

commit 0c53f08
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:30:54 2018 -0500

    Imports

commit ce94bf9
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:28:16 2018 -0500

    Moves

commit fdd43c4
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:26:09 2018 -0500

    Closes pandas-dev#22850

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

* fixed merge conflict

* Handle divmod test

* extension tests passing

* Squashed commit of the following:

commit c9d6e89
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:34:22 2018 -0500

    xpass -> skip

commit 95d5cbf
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:22:17 2018 -0500

    typo, import

commit 4e9b7f0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:18:40 2018 -0500

    doc update

commit cc2bfc8
Merge: 11a0d93 fe67b94
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:15:46 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit fe67b94
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:55:09 2018 -0500

    Update type for PeriodDtype / DatetimeTZDtype / IntervalDtype (pandas-dev#22938)

commit b12e5ba
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:30:29 2018 -0500

    Safer is dtype (pandas-dev#22975)

commit c19c805
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:27:54 2018 -0500

    Catch Exception in combine (pandas-dev#22936)

commit d553ab3
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:24:06 2018 +0200

    TST: Fixturize series/test_combine_concat.py (pandas-dev#22964)

commit 4c78b97
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:39 2018 +0200

    TST: Fixturize series/test_constructors.py (pandas-dev#22965)

commit 45d3bb7
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:20 2018 +0200

    TST: Fixturize series/test_datetime_values.py (pandas-dev#22966)

commit f1a22ff
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:22:21 2018 +0200

    TST: Fixturize series/test_dtypes.py (pandas-dev#22967)

commit abf68fd
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:21:45 2018 +0200

    TST: Fixturize series/test_io.py (pandas-dev#22972)

commit e6b0c29
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:20:46 2018 +0200

    TST: Fixturize series/test_missing.py (pandas-dev#22973)

commit 9b405b8
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Thu Oct 4 13:16:28 2018 +0200

    CLN: values is required argument in _shallow_copy_with_infer (pandas-dev#22983)

commit c282e31
Author: h-vetinari <33685575+h-vetinari@users.noreply.github.com>
Date:   Thu Oct 4 03:34:35 2018 +0200

    Fix ASV import error (pandas-dev#22978)

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

* merge conflict

* wip

* indexes passing

* op names

* extension, arrays passing

* fixup

* lint

* Fixed to_timestamp

* Same error message for index, series

* Fix freq handling in to_timestamp

* dtype update

* accept kwargs

* fixups

* updates

* explicit

* add to assert

* wip period_array

* wip period_array

* order

* sort order

* test for hashing

* update

* lint

* boxing

* fix fixtures

* infer

* Remove seemingly unreachable code

* lint

* wip

* Updates for master

* simplify

* wip

* remove view

* simplify

* lint

* Removed add_comparison_methods

* xfail op

* remove some

* constructors

* Constructor cleanup

* misc fixups

* more xfails

* typo

* Added asi8

* Allow setting nan

* revert breaking docs

* Override _add_sub_int_array

* lint

* Update PeriodIndex._simple_new

* Clean up uses of .values, ._values, ._ndarray_values, ._data

* one more values

* remove xfails

* Fixed freq handling in _shallow_copy with a freq

* test updates

* API: Keep PeriodIndex.values an ndarray

* BUG: Raise for non-equal freq in take

* Punt on DataFrame.replace specializing

* lint

* fixed xfail message

* TST: _from_datetime64

* Fixups

- Perf in period_array
- pyarrow error
- py2 compat

* escape

* dtype

* revert and unxfail values

* error catching

* isort

* Avoid PeriodArray.values

* clarify _box_func usage

* TST: unxfail ops tests

* Avoid use of .values

* __setitem__ type

* Misc cleanups

* docstring on PeriodArray
* examples for period_array
* remove _box_values_as_index
* names
* object_dtype
* use __sub__

* lint

* API: remove ordinal from period_array

* catch exception

* misc cleanup

* Handle astype integer size

* Bump test coverage

* remove partial test

* close bracket

* change the test

* isort

* consistent _data

* lint

* ndarray_values -> asi8

* colocate ops

* refactor PeriodIndex.item

remove unused method

* return NotImplemented for Series / Index

* remove xpass

* release note

* types, use data

* remove ufunc xpass

Pingviinituutti added a commit to Pingviinituutti/pandas that referenced this pull request Feb 28, 2019

REF: Make PeriodArray an ExtensionArray (pandas-dev#22862)
* WIP: PeriodArray

* WIP

* remove debug

* Just moves

* PeriodArray.shift definition

* _data type

* clean

* accessor wip

* some more wip

* tshift, shift

* Arithmetic

* repr changes

* wip

* freq setter

* Added disabled ops

* copy

* Support concat

* object ctor

* Updates

* lint

* lint

* wip

* more wip

* array-setitem

* wip

* wip

* Use ._tshift internally for datetimelike ops

In preperation for PeriodArray / DatetimeArray / TimedeltaArray.

Index.shift has a different meaning from ExtensionArray.shift.

- Index.shift pointwise shifts each element by some amount
- ExtensionArray.shift shits the *position* of each value in the array
  padding the end with NA

This is going to get confusing. This PR tries to avoid some of that by
internally using a new `_tshift` method (time-shift) when we want to do pointwise
shifting of each value. Places that know they want that behavior (like in the
datetimelike ops) should use that.

* deep

* Squashed commit of the following:

commit 23e5cfc
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:10:41 2018 -0500

    Use ._tshift internally for datetimelike ops

    In preperation for PeriodArray / DatetimeArray / TimedeltaArray.

    Index.shift has a different meaning from ExtensionArray.shift.

    - Index.shift pointwise shifts each element by some amount
    - ExtensionArray.shift shits the *position* of each value in the array
      padding the end with NA

    This is going to get confusing. This PR tries to avoid some of that by
    internally using a new `_tshift` method (time-shift) when we want to do pointwise
    shifting of each value. Places that know they want that behavior (like in the
    datetimelike ops) should use that.

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit bccfc3f
Merge: d65980e 9caf048
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:47:48 2018 -0500

    Merge remote-tracking branch 'upstream/master' into period-dtype-type

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (pandas-dev#22948)

commit d65980e
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:46:38 2018 -0500

    typo

commit e5c61fc
Merge: d7a8e1b 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:57:59 2018 -0500

    Merge remote-tracking branch 'upstream/master' into period-dtype-type

commit d7a8e1b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:57:56 2018 -0500

    Fixed

commit 598cc62
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:32:22 2018 -0500

    doc note

commit 83db05c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:28:52 2018 -0500

    updates

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit f07ab80
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:22:27 2018 -0500

    str, bytes

commit 8a8bdb0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:40:59 2018 -0500

    import at top

commit 99bafdd
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:38:12 2018 -0500

    Update type for PeriodDtype

    Removed unused IntervalDtypeType

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* fixup

* The rest of the EA tests

* docs

* rename to time_shift

* Squashed commit of the following:

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit ee80803
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Wed Oct 3 08:25:44 2018 -0700

     BUG: Correctly weekly resample over DST (pandas-dev#22941)

    * test resample fix

    * move the localization until needed

    * BUG: Correctly weekly resample over DST

    * Move whatsnew to new section

commit fea27f0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Wed Oct 3 08:49:44 2018 -0500

    CI: pin moto to 1.3.4 (pandas-dev#22959)

commit 15d32bb
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 04:32:35 2018 -0700

    [CLN] Dispatch (some) Frame ops to Series, avoiding _data.eval (pandas-dev#22019)

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    * Dispatch to Series ops in _combine_match_columns

    * comment

    * docstring

    * flake8 fixup

    * dont bother with try_cast_result

    * revert non-central change

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    * revert non-central changes

    * Fixup typo syntaxerror

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    * Pass unwrapped op where appropriate

    * catch correct error

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    * doc fixup

commit 3e3256b
Author: alimcmaster1 <alimcmaster1@gmail.com>
Date:   Wed Oct 3 12:23:22 2018 +0100

    Allow passing a mask to NanOps (pandas-dev#22865)

commit e756e99
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 02:19:27 2018 -0700

    CLN: Use is_period_dtype instead of ABCPeriodIndex checks (pandas-dev#22958)

commit 03181f0
Author: Wenhuan <lixx0880@gmail.com>
Date:   Wed Oct 3 15:28:07 2018 +0800

    BUG: fix Series(extension array) + extension array values addition (pandas-dev#22479)

commit 04ea51d
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Wed Oct 3 09:24:36 2018 +0200

    CLN: small clean-up of IntervalIndex (pandas-dev#22956)

commit b0f9a10
Author: Tony Tao <34781056+tonytao2012@users.noreply.github.com>
Date:   Tue Oct 2 19:01:08 2018 -0500

    DOC GH22893 Fix docstring of groupby in pandas/core/generic.py (pandas-dev#22920)

commit 08ecba8
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Tue Oct 2 14:22:53 2018 -0700

    BUG: fix DataFrame+DataFrame op with timedelta64 dtype (pandas-dev#22696)

commit c44bad2
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:16:25 2018 -0400

    CLN GH22873 Replace base excepts in pandas/core (pandas-dev#22901)

commit 8e749a3
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:14:48 2018 -0400

    CLN GH22874 replace bare excepts in pandas/io/pytables.py (pandas-dev#22919)

commit 1102a33
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 22:31:36 2018 +0200

    DOC/CLN: clean-up shared_docs in generic.py (pandas-dev#20074)

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (pandas-dev#22948)

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit 7714e79
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 10:13:06 2018 -0500

    Always return ndarray

commit 1921c6f
Merge: 01f7366 fea27f0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 09:50:30 2018 -0500

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commit fea27f0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Wed Oct 3 08:49:44 2018 -0500

    CI: pin moto to 1.3.4 (pandas-dev#22959)

commit 15d32bb
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 04:32:35 2018 -0700

    [CLN] Dispatch (some) Frame ops to Series, avoiding _data.eval (pandas-dev#22019)

    * avoid casting to object dtype in mixed-type frames

    * Dispatch to Series ops in _combine_match_columns

    * comment

    * docstring

    * flake8 fixup

    * dont bother with try_cast_result

    * revert non-central change

    * simplify

    * revert try_cast_results

    * revert non-central changes

    * Fixup typo syntaxerror

    * simplify assertion

    * use dispatch_to_series in combine_match_columns

    * Pass unwrapped op where appropriate

    * catch correct error

    * whatsnew note

    * comment

    * whatsnew section

    * remove unnecessary tester

    * doc fixup

commit 3e3256b
Author: alimcmaster1 <alimcmaster1@gmail.com>
Date:   Wed Oct 3 12:23:22 2018 +0100

    Allow passing a mask to NanOps (pandas-dev#22865)

commit e756e99
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 02:19:27 2018 -0700

    CLN: Use is_period_dtype instead of ABCPeriodIndex checks (pandas-dev#22958)

commit 03181f0
Author: Wenhuan <lixx0880@gmail.com>
Date:   Wed Oct 3 15:28:07 2018 +0800

    BUG: fix Series(extension array) + extension array values addition (pandas-dev#22479)

commit 04ea51d
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Wed Oct 3 09:24:36 2018 +0200

    CLN: small clean-up of IntervalIndex (pandas-dev#22956)

commit b0f9a10
Author: Tony Tao <34781056+tonytao2012@users.noreply.github.com>
Date:   Tue Oct 2 19:01:08 2018 -0500

    DOC GH22893 Fix docstring of groupby in pandas/core/generic.py (pandas-dev#22920)

commit 08ecba8
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Tue Oct 2 14:22:53 2018 -0700

    BUG: fix DataFrame+DataFrame op with timedelta64 dtype (pandas-dev#22696)

commit c44bad2
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:16:25 2018 -0400

    CLN GH22873 Replace base excepts in pandas/core (pandas-dev#22901)

commit 8e749a3
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:14:48 2018 -0400

    CLN GH22874 replace bare excepts in pandas/io/pytables.py (pandas-dev#22919)

commit 1102a33
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 22:31:36 2018 +0200

    DOC/CLN: clean-up shared_docs in generic.py (pandas-dev#20074)

commit 01f7366
Merge: 5372134 9caf048
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:50:28 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (pandas-dev#22948)

commit 5372134
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:35:07 2018 -0500

    fixed move

commit ce1a3c6
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:32:11 2018 -0500

    fixed move

commit b9c7e4b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:28:57 2018 -0500

    remove old note

commit a4a2933
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:24:48 2018 -0500

    handle test

commit be63feb
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:19:17 2018 -0500

    move test

commit 0eef0cf
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:18:18 2018 -0500

    move back

commit 2183f7b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:17:28 2018 -0500

    api

commit 85fc5d8
Merge: 9059c0d 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:15:52 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit 9059c0d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:33:15 2018 -0500

    Note

commit 0c53f08
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:30:54 2018 -0500

    Imports

commit ce94bf9
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:28:16 2018 -0500

    Moves

commit fdd43c4
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:26:09 2018 -0500

    Closes pandas-dev#22850

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

* fixed merge conflict

* Handle divmod test

* extension tests passing

* Squashed commit of the following:

commit c9d6e89
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:34:22 2018 -0500

    xpass -> skip

commit 95d5cbf
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:22:17 2018 -0500

    typo, import

commit 4e9b7f0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:18:40 2018 -0500

    doc update

commit cc2bfc8
Merge: 11a0d93 fe67b94
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:15:46 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit fe67b94
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:55:09 2018 -0500

    Update type for PeriodDtype / DatetimeTZDtype / IntervalDtype (pandas-dev#22938)

commit b12e5ba
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:30:29 2018 -0500

    Safer is dtype (pandas-dev#22975)

commit c19c805
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:27:54 2018 -0500

    Catch Exception in combine (pandas-dev#22936)

commit d553ab3
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:24:06 2018 +0200

    TST: Fixturize series/test_combine_concat.py (pandas-dev#22964)

commit 4c78b97
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:39 2018 +0200

    TST: Fixturize series/test_constructors.py (pandas-dev#22965)

commit 45d3bb7
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:20 2018 +0200

    TST: Fixturize series/test_datetime_values.py (pandas-dev#22966)

commit f1a22ff
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:22:21 2018 +0200

    TST: Fixturize series/test_dtypes.py (pandas-dev#22967)

commit abf68fd
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:21:45 2018 +0200

    TST: Fixturize series/test_io.py (pandas-dev#22972)

commit e6b0c29
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:20:46 2018 +0200

    TST: Fixturize series/test_missing.py (pandas-dev#22973)

commit 9b405b8
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Thu Oct 4 13:16:28 2018 +0200

    CLN: values is required argument in _shallow_copy_with_infer (pandas-dev#22983)

commit c282e31
Author: h-vetinari <33685575+h-vetinari@users.noreply.github.com>
Date:   Thu Oct 4 03:34:35 2018 +0200

    Fix ASV import error (pandas-dev#22978)

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

* merge conflict

* wip

* indexes passing

* op names

* extension, arrays passing

* fixup

* lint

* Fixed to_timestamp

* Same error message for index, series

* Fix freq handling in to_timestamp

* dtype update

* accept kwargs

* fixups

* updates

* explicit

* add to assert

* wip period_array

* wip period_array

* order

* sort order

* test for hashing

* update

* lint

* boxing

* fix fixtures

* infer

* Remove seemingly unreachable code

* lint

* wip

* Updates for master

* simplify

* wip

* remove view

* simplify

* lint

* Removed add_comparison_methods

* xfail op

* remove some

* constructors

* Constructor cleanup

* misc fixups

* more xfails

* typo

* Added asi8

* Allow setting nan

* revert breaking docs

* Override _add_sub_int_array

* lint

* Update PeriodIndex._simple_new

* Clean up uses of .values, ._values, ._ndarray_values, ._data

* one more values

* remove xfails

* Fixed freq handling in _shallow_copy with a freq

* test updates

* API: Keep PeriodIndex.values an ndarray

* BUG: Raise for non-equal freq in take

* Punt on DataFrame.replace specializing

* lint

* fixed xfail message

* TST: _from_datetime64

* Fixups

- Perf in period_array
- pyarrow error
- py2 compat

* escape

* dtype

* revert and unxfail values

* error catching

* isort

* Avoid PeriodArray.values

* clarify _box_func usage

* TST: unxfail ops tests

* Avoid use of .values

* __setitem__ type

* Misc cleanups

* docstring on PeriodArray
* examples for period_array
* remove _box_values_as_index
* names
* object_dtype
* use __sub__

* lint

* API: remove ordinal from period_array

* catch exception

* misc cleanup

* Handle astype integer size

* Bump test coverage

* remove partial test

* close bracket

* change the test

* isort

* consistent _data

* lint

* ndarray_values -> asi8

* colocate ops

* refactor PeriodIndex.item

remove unused method

* return NotImplemented for Series / Index

* remove xpass

* release note

* types, use data

* remove ufunc xpass

Pingviinituutti added a commit to Pingviinituutti/pandas that referenced this pull request Feb 28, 2019

REF: Make PeriodArray an ExtensionArray (pandas-dev#22862)
* WIP: PeriodArray

* WIP

* remove debug

* Just moves

* PeriodArray.shift definition

* _data type

* clean

* accessor wip

* some more wip

* tshift, shift

* Arithmetic

* repr changes

* wip

* freq setter

* Added disabled ops

* copy

* Support concat

* object ctor

* Updates

* lint

* lint

* wip

* more wip

* array-setitem

* wip

* wip

* Use ._tshift internally for datetimelike ops

In preperation for PeriodArray / DatetimeArray / TimedeltaArray.

Index.shift has a different meaning from ExtensionArray.shift.

- Index.shift pointwise shifts each element by some amount
- ExtensionArray.shift shits the *position* of each value in the array
  padding the end with NA

This is going to get confusing. This PR tries to avoid some of that by
internally using a new `_tshift` method (time-shift) when we want to do pointwise
shifting of each value. Places that know they want that behavior (like in the
datetimelike ops) should use that.

* deep

* Squashed commit of the following:

commit 23e5cfc
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:10:41 2018 -0500

    Use ._tshift internally for datetimelike ops

    In preperation for PeriodArray / DatetimeArray / TimedeltaArray.

    Index.shift has a different meaning from ExtensionArray.shift.

    - Index.shift pointwise shifts each element by some amount
    - ExtensionArray.shift shits the *position* of each value in the array
      padding the end with NA

    This is going to get confusing. This PR tries to avoid some of that by
    internally using a new `_tshift` method (time-shift) when we want to do pointwise
    shifting of each value. Places that know they want that behavior (like in the
    datetimelike ops) should use that.

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit bccfc3f
Merge: d65980e 9caf048
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:47:48 2018 -0500

    Merge remote-tracking branch 'upstream/master' into period-dtype-type

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (pandas-dev#22948)

commit d65980e
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:46:38 2018 -0500

    typo

commit e5c61fc
Merge: d7a8e1b 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:57:59 2018 -0500

    Merge remote-tracking branch 'upstream/master' into period-dtype-type

commit d7a8e1b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:57:56 2018 -0500

    Fixed

commit 598cc62
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:32:22 2018 -0500

    doc note

commit 83db05c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:28:52 2018 -0500

    updates

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit f07ab80
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:22:27 2018 -0500

    str, bytes

commit 8a8bdb0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:40:59 2018 -0500

    import at top

commit 99bafdd
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:38:12 2018 -0500

    Update type for PeriodDtype

    Removed unused IntervalDtypeType

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* fixup

* The rest of the EA tests

* docs

* rename to time_shift

* Squashed commit of the following:

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit ee80803
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Wed Oct 3 08:25:44 2018 -0700

     BUG: Correctly weekly resample over DST (pandas-dev#22941)

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    * BUG: Correctly weekly resample over DST

    * Move whatsnew to new section

commit fea27f0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Wed Oct 3 08:49:44 2018 -0500

    CI: pin moto to 1.3.4 (pandas-dev#22959)

commit 15d32bb
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 04:32:35 2018 -0700

    [CLN] Dispatch (some) Frame ops to Series, avoiding _data.eval (pandas-dev#22019)

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commit 3e3256b
Author: alimcmaster1 <alimcmaster1@gmail.com>
Date:   Wed Oct 3 12:23:22 2018 +0100

    Allow passing a mask to NanOps (pandas-dev#22865)

commit e756e99
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 02:19:27 2018 -0700

    CLN: Use is_period_dtype instead of ABCPeriodIndex checks (pandas-dev#22958)

commit 03181f0
Author: Wenhuan <lixx0880@gmail.com>
Date:   Wed Oct 3 15:28:07 2018 +0800

    BUG: fix Series(extension array) + extension array values addition (pandas-dev#22479)

commit 04ea51d
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Wed Oct 3 09:24:36 2018 +0200

    CLN: small clean-up of IntervalIndex (pandas-dev#22956)

commit b0f9a10
Author: Tony Tao <34781056+tonytao2012@users.noreply.github.com>
Date:   Tue Oct 2 19:01:08 2018 -0500

    DOC GH22893 Fix docstring of groupby in pandas/core/generic.py (pandas-dev#22920)

commit 08ecba8
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Tue Oct 2 14:22:53 2018 -0700

    BUG: fix DataFrame+DataFrame op with timedelta64 dtype (pandas-dev#22696)

commit c44bad2
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:16:25 2018 -0400

    CLN GH22873 Replace base excepts in pandas/core (pandas-dev#22901)

commit 8e749a3
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:14:48 2018 -0400

    CLN GH22874 replace bare excepts in pandas/io/pytables.py (pandas-dev#22919)

commit 1102a33
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 22:31:36 2018 +0200

    DOC/CLN: clean-up shared_docs in generic.py (pandas-dev#20074)

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (pandas-dev#22948)

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit 7714e79
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 10:13:06 2018 -0500

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commit 1921c6f
Merge: 01f7366 fea27f0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 09:50:30 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit fea27f0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Wed Oct 3 08:49:44 2018 -0500

    CI: pin moto to 1.3.4 (pandas-dev#22959)

commit 15d32bb
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 04:32:35 2018 -0700

    [CLN] Dispatch (some) Frame ops to Series, avoiding _data.eval (pandas-dev#22019)

    * avoid casting to object dtype in mixed-type frames

    * Dispatch to Series ops in _combine_match_columns

    * comment

    * docstring

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    * Pass unwrapped op where appropriate

    * catch correct error

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commit 3e3256b
Author: alimcmaster1 <alimcmaster1@gmail.com>
Date:   Wed Oct 3 12:23:22 2018 +0100

    Allow passing a mask to NanOps (pandas-dev#22865)

commit e756e99
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Wed Oct 3 02:19:27 2018 -0700

    CLN: Use is_period_dtype instead of ABCPeriodIndex checks (pandas-dev#22958)

commit 03181f0
Author: Wenhuan <lixx0880@gmail.com>
Date:   Wed Oct 3 15:28:07 2018 +0800

    BUG: fix Series(extension array) + extension array values addition (pandas-dev#22479)

commit 04ea51d
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Wed Oct 3 09:24:36 2018 +0200

    CLN: small clean-up of IntervalIndex (pandas-dev#22956)

commit b0f9a10
Author: Tony Tao <34781056+tonytao2012@users.noreply.github.com>
Date:   Tue Oct 2 19:01:08 2018 -0500

    DOC GH22893 Fix docstring of groupby in pandas/core/generic.py (pandas-dev#22920)

commit 08ecba8
Author: jbrockmendel <jbrockmendel@gmail.com>
Date:   Tue Oct 2 14:22:53 2018 -0700

    BUG: fix DataFrame+DataFrame op with timedelta64 dtype (pandas-dev#22696)

commit c44bad2
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:16:25 2018 -0400

    CLN GH22873 Replace base excepts in pandas/core (pandas-dev#22901)

commit 8e749a3
Author: Pamela Wu <pambot@users.noreply.github.com>
Date:   Tue Oct 2 17:14:48 2018 -0400

    CLN GH22874 replace bare excepts in pandas/io/pytables.py (pandas-dev#22919)

commit 1102a33
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 22:31:36 2018 +0200

    DOC/CLN: clean-up shared_docs in generic.py (pandas-dev#20074)

commit 01f7366
Merge: 5372134 9caf048
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 13:50:28 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit 9caf048
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 13:25:22 2018 -0500

    CI: change windows vm image (pandas-dev#22948)

commit 5372134
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:35:07 2018 -0500

    fixed move

commit ce1a3c6
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:32:11 2018 -0500

    fixed move

commit b9c7e4b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:28:57 2018 -0500

    remove old note

commit a4a2933
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:24:48 2018 -0500

    handle test

commit be63feb
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:19:17 2018 -0500

    move test

commit 0eef0cf
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:18:18 2018 -0500

    move back

commit 2183f7b
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:17:28 2018 -0500

    api

commit 85fc5d8
Merge: 9059c0d 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:15:52 2018 -0500

    Merge remote-tracking branch 'upstream/master' into combine-exception

commit 1d9f76c
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Tue Oct 2 17:11:11 2018 +0200

    CLN: remove Index._to_embed (pandas-dev#22879)

    * CLN: remove Index._to_embed

    * pep8

commit 6247da0
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Tue Oct 2 08:50:41 2018 -0500

    Provide default implementation for `data_repated` (pandas-dev#22935)

commit 9059c0d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:33:15 2018 -0500

    Note

commit 0c53f08
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:30:54 2018 -0500

    Imports

commit ce94bf9
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 06:28:16 2018 -0500

    Moves

commit fdd43c4
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 21:26:09 2018 -0500

    Closes pandas-dev#22850

commit 5ce06b5
Author: Matthew Roeschke <emailformattr@gmail.com>
Date:   Mon Oct 1 14:22:20 2018 -0700

     BUG: to_datetime preserves name of Index argument in the result (pandas-dev#22918)

    * BUG: to_datetime preserves name of Index argument in the result

    * correct test

* Squashed commit of the following:

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

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commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

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commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

* fixed merge conflict

* Handle divmod test

* extension tests passing

* Squashed commit of the following:

commit c9d6e89
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:34:22 2018 -0500

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commit 95d5cbf
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:22:17 2018 -0500

    typo, import

commit 4e9b7f0
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:18:40 2018 -0500

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commit cc2bfc8
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Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Thu Oct 4 08:15:46 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit fe67b94
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:55:09 2018 -0500

    Update type for PeriodDtype / DatetimeTZDtype / IntervalDtype (pandas-dev#22938)

commit b12e5ba
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:30:29 2018 -0500

    Safer is dtype (pandas-dev#22975)

commit c19c805
Author: Tom Augspurger <TomAugspurger@users.noreply.github.com>
Date:   Thu Oct 4 06:27:54 2018 -0500

    Catch Exception in combine (pandas-dev#22936)

commit d553ab3
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:24:06 2018 +0200

    TST: Fixturize series/test_combine_concat.py (pandas-dev#22964)

commit 4c78b97
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:39 2018 +0200

    TST: Fixturize series/test_constructors.py (pandas-dev#22965)

commit 45d3bb7
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:23:20 2018 +0200

    TST: Fixturize series/test_datetime_values.py (pandas-dev#22966)

commit f1a22ff
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:22:21 2018 +0200

    TST: Fixturize series/test_dtypes.py (pandas-dev#22967)

commit abf68fd
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:21:45 2018 +0200

    TST: Fixturize series/test_io.py (pandas-dev#22972)

commit e6b0c29
Author: Anjali2019 <Anjali2019@users.noreply.github.com>
Date:   Thu Oct 4 13:20:46 2018 +0200

    TST: Fixturize series/test_missing.py (pandas-dev#22973)

commit 9b405b8
Author: Joris Van den Bossche <jorisvandenbossche@gmail.com>
Date:   Thu Oct 4 13:16:28 2018 +0200

    CLN: values is required argument in _shallow_copy_with_infer (pandas-dev#22983)

commit c282e31
Author: h-vetinari <33685575+h-vetinari@users.noreply.github.com>
Date:   Thu Oct 4 03:34:35 2018 +0200

    Fix ASV import error (pandas-dev#22978)

commit 11a0d93
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:26:34 2018 -0500

    typerror

commit a0cd5e7
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 14:25:38 2018 -0500

    TypeError for Series

commit 2247461
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:29:29 2018 -0500

    Test op(Series[EA], EA])

commit c9fe5d3
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:21:33 2018 -0500

    make strict

commit 7ef697c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:14:52 2018 -0500

    Use super

commit 35d4213
Merge: 0671e7d ee80803
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Wed Oct 3 13:11:05 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit 0671e7d
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 11:10:42 2018 -0500

    Fixup

commit 1b4261f
Merge: c92a4a8 1d9f76c
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Tue Oct 2 10:58:43 2018 -0500

    Merge remote-tracking branch 'upstream/master' into ea-divmod

commit c92a4a8
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:56:15 2018 -0500

    Update old test

commit 52538fa
Author: Tom Augspurger <tom.w.augspurger@gmail.com>
Date:   Mon Oct 1 16:51:48 2018 -0500

    BUG: divmod return type

* merge conflict

* wip

* indexes passing

* op names

* extension, arrays passing

* fixup

* lint

* Fixed to_timestamp

* Same error message for index, series

* Fix freq handling in to_timestamp

* dtype update

* accept kwargs

* fixups

* updates

* explicit

* add to assert

* wip period_array

* wip period_array

* order

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* test for hashing

* update

* lint

* boxing

* fix fixtures

* infer

* Remove seemingly unreachable code

* lint

* wip

* Updates for master

* simplify

* wip

* remove view

* simplify

* lint

* Removed add_comparison_methods

* xfail op

* remove some

* constructors

* Constructor cleanup

* misc fixups

* more xfails

* typo

* Added asi8

* Allow setting nan

* revert breaking docs

* Override _add_sub_int_array

* lint

* Update PeriodIndex._simple_new

* Clean up uses of .values, ._values, ._ndarray_values, ._data

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* Fixed freq handling in _shallow_copy with a freq

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* BUG: Raise for non-equal freq in take

* Punt on DataFrame.replace specializing

* lint

* fixed xfail message

* TST: _from_datetime64

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- pyarrow error
- py2 compat

* escape

* dtype

* revert and unxfail values

* error catching

* isort

* Avoid PeriodArray.values

* clarify _box_func usage

* TST: unxfail ops tests

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* __setitem__ type

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* examples for period_array
* remove _box_values_as_index
* names
* object_dtype
* use __sub__

* lint

* API: remove ordinal from period_array

* catch exception

* misc cleanup

* Handle astype integer size

* Bump test coverage

* remove partial test

* close bracket

* change the test

* isort

* consistent _data

* lint

* ndarray_values -> asi8

* colocate ops

* refactor PeriodIndex.item

remove unused method

* return NotImplemented for Series / Index

* remove xpass

* release note

* types, use data

* remove ufunc xpass
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