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Constructing a df with readonly array of Periods fails #25403

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max-sixty opened this issue Feb 21, 2019 · 4 comments

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@max-sixty
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commented Feb 21, 2019

Code Sample, a copy-pastable example if possible

In [1]: import pandas as pd

In [2]: import numpy as np

In [6]: pa = pd.PeriodIndex([pd.Period('2019-01-01')]).to_numpy()


In [8]: pa.setflags(write=False)

In [9]: pd.DataFrame(dict(date=pa, x=[1]))
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-9-7a4f1ee8be64> in <module>()
----> 1 pd.DataFrame(dict(date=pa, x=[1]))

/usr/local/lib/python2.7/site-packages/pandas/core/frame.pyc in __init__(self, data, index, columns, dtype, copy)
    390                                  dtype=dtype, copy=copy)
    391         elif isinstance(data, dict):
--> 392             mgr = init_dict(data, index, columns, dtype=dtype)
    393         elif isinstance(data, ma.MaskedArray):
    394             import numpy.ma.mrecords as mrecords

/usr/local/lib/python2.7/site-packages/pandas/core/internals/construction.pyc in init_dict(data, index, columns, dtype)
    210         arrays = [data[k] for k in keys]
    211
--> 212     return arrays_to_mgr(arrays, data_names, index, columns, dtype=dtype)
    213
    214

/usr/local/lib/python2.7/site-packages/pandas/core/internals/construction.pyc in arrays_to_mgr(arrays, arr_names, index, columns, dtype)
     54
     55     # don't force copy because getting jammed in an ndarray anyway
---> 56     arrays = _homogenize(arrays, index, dtype)
     57
     58     # from BlockManager perspective

/usr/local/lib/python2.7/site-packages/pandas/core/internals/construction.pyc in _homogenize(data, index, dtype)
    275                 val = lib.fast_multiget(val, oindex.values, default=np.nan)
    276             val = sanitize_array(val, index, dtype=dtype, copy=False,
--> 277                                  raise_cast_failure=False)
    278
    279         homogenized.append(val)

/usr/local/lib/python2.7/site-packages/pandas/core/internals/construction.pyc in sanitize_array(data, index, dtype, copy, raise_cast_failure)
    675         if inferred == 'period':
    676             try:
--> 677                 subarr = period_array(subarr)
    678             except IncompatibleFrequency:
    679                 pass

/usr/local/lib/python2.7/site-packages/pandas/core/arrays/period.pyc in period_array(data, freq, copy)
    786     data = ensure_object(data)
    787
--> 788     return PeriodArray._from_sequence(data, dtype=dtype)
    789
    790

/usr/local/lib/python2.7/site-packages/pandas/core/arrays/period.pyc in _from_sequence(cls, scalars, dtype, copy)
    197             periods = periods.copy()
    198
--> 199         freq = freq or libperiod.extract_freq(periods)
    200         ordinals = libperiod.extract_ordinals(periods, freq)
    201         return cls(ordinals, freq=freq)

pandas/_libs/tslibs/period.pyx in pandas._libs.tslibs.period.extract_freq()

/usr/local/lib/python2.7/site-packages/pandas/_libs/tslibs/period.so in View.MemoryView.memoryview_cwrapper()

/usr/local/lib/python2.7/site-packages/pandas/_libs/tslibs/period.so in View.MemoryView.memoryview.__cinit__()

ValueError: buffer source array is read-only

Problem description

I'm currently seeing this issue because xarray is constructing a read-only array of Periods in a .to_dataframe() call.

If pandas isn't expected to support these arrays, we could attempt to prevent this in xarray

Expected Output

Output of pd.show_versions()

In [10]: pd.show_versions()

INSTALLED VERSIONS

commit: None
python: 2.7.15.final.0
python-bits: 64
OS: Darwin
OS-release: 18.2.0
machine: x86_64
processor: i386
byteorder: little
LC_ALL: None
LANG: en_US.UTF-8
LOCALE: None.None

pandas: 0.24.1
pytest: 4.2.0
pip: 19.0.3
setuptools: 40.6.3
Cython: 0.29.5
numpy: 1.16.1
scipy: 1.2.1
pyarrow: 0.12.0
xarray: 0.11.3
IPython: 5.8.0
sphinx: None
patsy: 0.5.1
dateutil: 2.8.0
pytz: 2018.9
blosc: None
bottleneck: 1.2.1
tables: None
numexpr: 2.6.9
feather: None
matplotlib: 2.2.3
openpyxl: None
xlrd: 1.2.0
xlwt: 1.3.0
xlsxwriter: None
lxml.etree: 4.3.1
bs4: 4.7.1
html5lib: None
sqlalchemy: 1.2.17
pymysql: None
psycopg2: None
jinja2: 2.10
s3fs: None
fastparquet: None
pandas_gbq: 0.9.0
pandas_datareader: 0.7.0
gcsfs: None

@jreback

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commented Feb 21, 2019

sounds like the same only cython issue that we had with take
cc @jbrockmendel

@max-sixty

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commented Feb 21, 2019

For reference, we're creating the readonly array with np.broadcast_to here: https://github.com/pydata/xarray/blob/master/xarray/core/variable.py#L1199

@jbrockmendel

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commented Feb 22, 2019

Easy fix: tslibs.period.extract_freq needs to be changed from def extract_freq(object[:] values): to def extract_freq(ndarray[object] values):. If cython ever supports const object[:] that will be the long-term solution.

@gfyoung gfyoung added Index Bug labels Feb 23, 2019

@jorisvandenbossche jorisvandenbossche added this to the 0.24.2 milestone Mar 4, 2019

@jorisvandenbossche

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commented Mar 4, 2019

If this is an easy fix, let's do it for 0.24.2, as this is a regression.

TomAugspurger added a commit to TomAugspurger/pandas that referenced this issue Mar 5, 2019

TomAugspurger added a commit that referenced this issue Mar 7, 2019

BUG: Handle readonly arrays in period_array (#25556)
* BUG: Handle readonly arrays in period_array

Closes #25403

the-nose-knows added a commit to the-nose-knows/pandas that referenced this issue Mar 9, 2019

upstream sync (#1)
* ERR/TST: Add pytest idiom to dtypes/test_cast.py (pandas-dev#24847)

* fix MacPython pandas-wheels failue (pandas-dev#24851)

* DEPS: Bump pyarrow min version to 0.9.0 (pandas-dev#24854)

Closes pandas-devgh-24767

* DOC: Document AttributeError for accessor (pandas-dev#24855)

Closes pandas-dev#20579

* Start whatsnew for 0.24.1 and 0.25.0 (pandas-dev#24848)

* DEPR/API: Non-ns precision in Index constructors (pandas-dev#24806)

* BUG: Format mismatch doesn't coerce to NaT (pandas-dev#24815)

* BUG: Properly parse unicode usecols names in CSV (pandas-dev#24856)

* CLN: fix typo in asv eval.Query suite (pandas-dev#24865)

* BUG: DataFrame respects dtype with masked recarray (pandas-dev#24874)

* REF/CLN: Move private method (pandas-dev#24875)

* BUG : ValueError in case on NaN value in groupby columns (pandas-dev#24850)

* BUG: fix floating precision formatting in presence of inf (pandas-dev#24863)

* DOC: Creating top-level user guide section, and moving pages inside (pandas-dev#24677)

* DOC: Creating top-level development section, and moving pages inside (pandas-dev#24691)

* DOC: Creating top-level getting started section, and moving pages inside (pandas-dev#24678)

* DOC: Implementing redirect system, and adding user_guide redirects (pandas-dev#24715)

* DOC: Implementing redirect system, and adding user_guide redirects

* Using relative urls for the redirect

* Validating that no file is overwritten by a redirect

* Adding redirects for getting started and development sections

* DOC: fixups (pandas-dev#24888)

* Fixed heading on whatnew
* Remove empty scalars.rst

* CLN: fix typo in ctors.SeriesDtypesConstructors setup (pandas-dev#24894)

* DOC: No clean in sphinx_build (pandas-dev#24902)

Closes pandas-dev#24727

* BUG (output formatting): use fixed with for truncation column instead of inferring from last column (pandas-dev#24905)

* DOC: also redirect old whatsnew url (pandas-dev#24906)

* Revert BUG-24212 fix usage of Index.take in pd.merge (pandas-dev#24904)

* Revert BUG-24212 fix usage of Index.take in pd.merge

xref pandas-dev#24733
xref pandas-dev#24897

* test 0.23.4 output

* added note about buggy test

* DOC: Add experimental note to DatetimeArray and TimedeltaArray (pandas-dev#24882)

* DOC: Add experimental note to DatetimeArray and TimedeltaArray

* Disable M8 in nanops (pandas-dev#24907)

* Disable M8 in nanops

Closes pandas-dev#24752

* CLN: fix typo in asv benchmark of non_unique_sorted, which was not sorted (pandas-dev#24917)

* API/VIS: remove misc plotting methods from plot accessor (revert pandas-dev#23811) (pandas-dev#24912)

* DOC: some 0.24.0 whatsnew clean-up (pandas-dev#24911)

* DOC: Final reorganization of documentation pages (pandas-dev#24890)

* DOC: Final reorganization of documentation pages

* Move ecosystem to top level

* DOC: Adding redirects to API moved pages (pandas-dev#24909)

* DOC: Adding redirects to API moved pages

* DOC: Making home page links more compact and clearer (pandas-dev#24928)

* DOC: 0.24 release date (pandas-dev#24930)

* DOC: Adding version to the whatsnew section in the home page (pandas-dev#24929)

* API: Remove IntervalArray from top-level (pandas-dev#24926)

* RLS: 0.24.0

* DEV: Start 0.25 cycle

* DOC: State that we support scalars in to_numeric (pandas-dev#24944)

We support it and test it already.

xref pandas-devgh-24910.

* DOC: Minor what's new fix (pandas-dev#24933)

* TST: GH#23922 Add missing match params to pytest.raises (pandas-dev#24937)

* Add tests for NaT when performing dt.to_period (pandas-dev#24921)

* DOC: switch headline whatsnew to 0.25 (pandas-dev#24941)

* BUG-24212 fix regression in pandas-dev#24897 (pandas-dev#24916)

* CLN: reduce overhead in setup for categoricals benchmarks in asv (pandas-dev#24913)

* Excel Reader Refactor - Base Class Introduction (pandas-dev#24829)

* TST/REF: Add pytest idiom to test_numeric.py (pandas-dev#24946)

* BLD: silence npy_no_deprecated warnings with numpy>=1.16.0 (pandas-dev#24864)

* CLN: Refactor cython to use memory views (pandas-dev#24932)

* DOC: Clean sort_values and sort_index docstrings (pandas-dev#24843)

* STY: use pytest.raises context syntax (indexing) (pandas-dev#24960)

* Fixed itertuples usage in to_dict (pandas-dev#24965)

* Fixed itertuples usage in to_dict

Closes pandas-dev#24940
Closes pandas-dev#24939

* STY: use pytest.raises context manager (resample) (pandas-dev#24977)

* DOC: Document breaking change to read_csv (pandas-dev#24989)

* DEPR: Fixed warning for implicit registration (pandas-dev#24964)

*  STY: use pytest.raises context manager (indexes/datetimes) (pandas-dev#24995)

* DOC: move whatsnew note of pandas-dev#24916 (pandas-dev#24999)

* BUG: Fix broken links (pandas-dev#25002)

The previous location of contributing.rst file was
/doc/source/contributing.rst but has been moved to
/doc/source/development/contributing.rst

* fix for BUG: grouping with tz-aware: Values falls after last bin (pandas-dev#24973)

* REGR: Preserve order by default in Index.difference (pandas-dev#24967)

Closes pandas-dev#24959

* CLN: do not use .repeat asv setting for storing benchmark data (pandas-dev#25015)

* CLN: isort asv_bench/benchmark/algorithms.py (pandas-dev#24958)

* fix+test to_timedelta('NaT', box=False) (pandas-dev#24961)

* PERF: significant speedup in sparse init and ops by using numpy in check_integrity (pandas-dev#24985)

* BUG: Fixed merging on tz-aware (pandas-dev#25033)

* Test nested PandasArray (pandas-dev#24993)

* DOC: fix error in documentation pandas-dev#24981 (pandas-dev#25038)

* BUG: support dtypes in column_dtypes for to_records() (pandas-dev#24895)

* Makes example from docstring work (pandas-dev#25035)

* CLN: typo fixups (pandas-dev#25028)

* BUG: to_datetime(strs, utc=True) used previous UTC offset (pandas-dev#25020)

* BUG: Better handle larger numbers in to_numeric (pandas-dev#24956)

* BUG: Better handle larger numbers in to_numeric

* Warn about lossiness when passing really large
numbers that exceed (u)int64 ranges.

* Coerce negative numbers to float when requested
instead of crashing and returning object.

* Consistently parse numbers as integers / floats,
even if we know that the resulting container has
to be float. This is to ensure consistent error
behavior when inputs numbers are too large.

Closes pandas-devgh-24910.

* MAINT: Address comments

* BUG: avoid usage in_qtconsole for recent IPython versions (pandas-dev#25039)

* Drop IPython<4.0 compat

* Revert "Drop IPython<4.0 compat"

This reverts commit 0cb0452.

* update
a
* whatsnew

* REGR: fix read_sql delegation for queries on MySQL/pymysql (pandas-dev#25024)

* DOC: Start 0.24.2.rst (pandas-dev#25026)

[ci skip]

* REGR: rename_axis with None should remove axis name (pandas-dev#25069)

* clarified the documentation for DF.drop_duplicates (pandas-dev#25056)

* Clarification in docstring of Series.value_counts (pandas-dev#25062)

* ENH: Support fold argument in Timestamp.replace (pandas-dev#25046)

* CLN: to_pickle internals (pandas-dev#25044)

* Implement+Test Tick.__rtruediv__ (pandas-dev#24832)

* API: change Index set ops sort=True -> sort=None (pandas-dev#25063)

* BUG: to_clipboard text truncated for Python 3 on Windows for UTF-16 text (pandas-dev#25040)

* PERF: use new to_records() argument in to_stata() (pandas-dev#25045)

* DOC: Cleanup 0.24.1 whatsnew (pandas-dev#25084)

* Fix quotes position in pandas.core, typos and misspelled parameters. (pandas-dev#25093)

* CLN: Remove sentinel_factory() in favor of object() (pandas-dev#25074)

* TST: remove DST transition scenarios from tc pandas-dev#24689 (pandas-dev#24736)

* BLD: remove spellcheck from Makefile (pandas-dev#25111)

* DOC: small clean-up of 0.24.1 whatsnew (pandas-dev#25096)

* DOC: small doc fix to Series.repeat (pandas-dev#25115)

* TST: tests for categorical apply (pandas-dev#25095)

* CLN: use dtype in constructor (pandas-dev#25098)

* DOC: frame.py doctest fixing (pandas-dev#25097)

* DOC: 0.24.1 release (pandas-dev#25125)

[ci skip]

* Revert set_index inspection/error handling for 0.24.1 (pandas-dev#25085)

* DOC: Minor what's new fix (pandas-dev#24933)

* Backport PR pandas-dev#24916: BUG-24212 fix regression in pandas-dev#24897 (pandas-dev#24951)

* Revert "Backport PR pandas-dev#24916: BUG-24212 fix regression in pandas-dev#24897 (pandas-dev#24951)"

This reverts commit 84056c5.

* DOC/CLN: Timezone section in timeseries.rst (pandas-dev#24825)

* DOC: Improve timezone documentation in timeseries.rst

* edit some of the examples

* Address review

* DOC: Fix validation type error RT04 (pandas-dev#25107) (pandas-dev#25129)

* Reading a HDF5 created in py2 (pandas-dev#25058)

* BUG: Fixing regression in DataFrame.all and DataFrame.any with bool_only=True (pandas-dev#25102)

* Removal of return variable names (pandas-dev#25123)

* DOC: Improve docstring of Series.mul (pandas-dev#25136)

* TST/REF: collect DataFrame reduction tests (pandas-dev#24914)

* Fix validation error type `SS05` and check in CI  (pandas-dev#25133)

* Fixed tuple to List Conversion in Dataframe class (pandas-dev#25089)

* STY: use pytest.raises context manager (indexes/multi) (pandas-dev#25175)

* DOC: Updates to Timestamp document (pandas-dev#25163)

* BLD: pin cython language level to '2' (pandas-dev#25145)

Not explicitly pinning the language level has been producing future
warnings from cython.  The next release of cython is going to change
the default level to '3str' under which the pandas cython extensions
do not compile.

The long term solution is to update the cython files to the next
language level, but this is a stop-gap to keep pandas building.

* CLN: Use ABCs in set_index (pandas-dev#25128)

* DOC: update docstring for series.nunique (pandas-dev#25116)

* DEPR: remove PanelGroupBy, disable DataFrame.to_panel (pandas-dev#25047)

* BUG: DataFrame.merge(suffixes=) does not respect None (pandas-dev#24819)

* fix MacPython pandas-wheels failure (pandas-dev#25186)

* modernize compat imports (pandas-dev#25192)

* TST: follow-up to Test nested pandas array pandas-dev#24993 (pandas-dev#25155)

* revert changes to tests in pandas-devgh-24993

* Test nested PandasArray

* isort test_numpy.py

* change NP_VERSION_INFO

* use LooseVersion

* add _np_version_under1p16

* remove blank line from merge master

* add doctstrings to fixtures

* DOC/CLN: Fix errors in Series docstrings (pandas-dev#24945)

* REF: Add more pytest idiom to test_holiday.py (pandas-dev#25204)

* DOC: Fix validation type error SA05 (pandas-dev#25208)

Create check for SA05 errors in CI

* BUG: Fix Series.is_unique with single occurrence of NaN (pandas-dev#25182)

* REF: Remove many Panel tests (pandas-dev#25191)

* DOC: Fixes to docstrings and add PR10 (space before colon) to validation (pandas-dev#25109)

* DOC: exclude autogenerated c/cpp/html files from 'trailing whitespace' checks (pandas-dev#24549)

* STY: use pytest.raises context manager (indexes/period) (pandas-dev#25199)

* fix ci failures (pandas-dev#25225)

* DEPR: remove tm.makePanel and all usages (pandas-dev#25231)

* DEPR: Remove Panel-specific parts of io.pytables (pandas-dev#25233)

* DEPR: Add Deprecated warning for timedelta with passed units M and Y  (pandas-dev#23264)

* BUG-25061 fix printing indices with NaNs (pandas-dev#25202)

* BUG: Fix regression in DataFrame.apply causing RecursionError (pandas-dev#25230)

* BUG: Fix regression in DataFrame.apply causing RecursionError

* Add feedback from PR

* Add feedback after further code review

* Add feedback after further code review 2

* BUG: Fix read_json orient='table' without index (pandas-dev#25170) (pandas-dev#25171)

* BLD: prevent asv from calling sys.stdin.close() by using different launch method (pandas-dev#25237)

* (Closes pandas-dev#25029) Removed extra bracket from cheatsheet code example. (pandas-dev#25032)

* CLN: For loops, boolean conditions, misc. (pandas-dev#25206)

* Refactor groupby group_add from tempita to fused types (pandas-dev#24954)

* CLN: Remove ipython 2.x compat (pandas-dev#25150)

* CLN: Remove ipython 2.x compat

* trivial change to trigger asv

* Update v0.25.0.rst

* revert whatsnew

* BUG: Duplicated returns boolean dataframe (pandas-dev#25234)

* REF/TST: resample/test_base.py (pandas-dev#25262)

* Revert "BLD: prevent asv from calling sys.stdin.close() by using different launch method (pandas-dev#25237)" (pandas-dev#25253)

This reverts commit f67b7fd.

* BUG: pandas Timestamp tz_localize and tz_convert do not preserve `freq` attribute (pandas-dev#25247)

* DEPR: remove assert_panel_equal (pandas-dev#25238)

* PR04 errors fix (pandas-dev#25157)

* Split Excel IO Into Sub-Directory (pandas-dev#25153)

* API: Ensure DatetimeTZDtype standardizes pytz timezones (pandas-dev#25254)

* API: Ensure DatetimeTZDtype standardizes pytz timezones

* Add whatsnew

* BUG: Fix exceptions when Series.interpolate's `order` parameter is missing or invalid (pandas-dev#25246)

* BUG: raise accurate exception from Series.interpolate (pandas-dev#24014)

* Actually validate `order` before use in spline

* Remove unnecessary check and dead code

* Clean up comparison/tests based on feedback

* Include invalid order value in exception

* Check for NaN order in spline validation

* Add whatsnew entry for bug fix

* CLN: Make unit tests assert one error at a time

* CLN: break test into distinct test case

* PEP8 fix in test module

* CLN: Test fixture for interpolate methods

* BUG: DataFrame.join on tz-aware DatetimeIndex (pandas-dev#25260)

* REF: use _constructor and ABCFoo to avoid runtime imports (pandas-dev#25272)

* Refactor groupby group_prod, group_var, group_mean, group_ohlc (pandas-dev#25249)

*  Fix typo in Cheat sheet with regex (pandas-dev#25215)

* Edit parameter type in pandas.core.frame.py DataFrame.count (pandas-dev#25198)

* TST/CLN: remove test_slice_ints_with_floats_raises (pandas-dev#25277)

* Removed Panel class from HDF ASVs (pandas-dev#25281)

* DOC: Fix minor typo in docstring (pandas-dev#25285)

* DOC/CLN: Fix errors in DataFrame docstrings (pandas-dev#24952)

* Skipped broken Py2 / Windows test (pandas-dev#25323)

* Rt05 documentation error fix issue 25108 (pandas-dev#25309)

* Fix typos in docs (pandas-dev#25305)

* Doc: corrects spelling in generic.py (pandas-dev#25333)

* BUG: groupby.transform retains timezone information (pandas-dev#25264)

* Fixes Formatting Exception (pandas-dev#25088)

* Bug: OverflowError in resample.agg with tz data (pandas-dev#25297)

* DOC/CLN: Fix various docstring errors (pandas-dev#25295)

* COMPAT: alias .to_numpy() for timestamp and timedelta scalars (pandas-dev#25142)

* ENH: Support times with timezones in at_time (pandas-dev#25280)

* BUG: Fix passing of numeric_only argument for categorical reduce (pandas-dev#25304)

* TST: use a fixed seed to have the same uniques across python versions (pandas-dev#25346)

TST: add pytest-mock to handle mocker fixture

* TST: xfail excel styler tests, xref GH25351 (pandas-dev#25352)

* TST: xfail excel styler tests, xref GH25351

* CI: cleanup .c files for cpplint>1.4

* DOC: Correct doc mistake in combiner func (pandas-dev#25360)

Closes pandas-devgh-25359.

* DOC/BLD: fix --no-api option (pandas-dev#25209)

* DOC: modify typos in Contributing section (pandas-dev#25365)

* Remove spurious MultiIndex creation in `_set_axis_name` (pandas-dev#25371)

* Resovles pandas-dev#25370
* Introduced by pandas-dev#22969

* pandas-dev#23049: test for Fatal Stack Overflow stemming From Misuse of astype('category') (pandas-dev#25366)

* 9236: test for the DataFrame.groupby with MultiIndex having pd.NaT (pandas-dev#25310)

* [BUG] exception handling of MultiIndex.__contains__ too narrow (pandas-dev#25268)

* 14873: test for groupby.agg coercing booleans (pandas-dev#25327)

* BUG/ENH: Timestamp.strptime (pandas-dev#25124)

* BUG: constructor Timestamp.strptime() does not support %z.

* Add doc string to NaT and Timestamp

* updated the error message

* Updated whatsnew entry.

* Interval dtype fix (pandas-dev#25338)

* [CLN] Excel Module Cleanups (pandas-dev#25275)

Closes pandas-devgh-25153

Authored-By: tdamsma <tdamsma@gmail.com>

* ENH: indexing and __getitem__ of dataframe and series accept zerodim integer np.array as int (pandas-dev#24924)

* REGR: fix TimedeltaIndex sum and datetime subtraction with NaT (pandas-dev#25282, pandas-dev#25317) (pandas-dev#25329)

* edited whatsnew typo (pandas-dev#25381)

* fix typo of see also in DataFrame stat funcs (pandas-dev#25388)

* API: more consistent error message for MultiIndex.from_arrays (pandas-dev#25189)

* CLN: (re-)enable infer_dtype to catch complex (pandas-dev#25382)

* DOC: Edited docstring of Interval (pandas-dev#25410)

The docstring contained a repeated segment, which I removed.

* Mark test_pct_max_many_rows as high memory (pandas-dev#25400)

Fixes issue pandas-dev#25384

* Correct a typo of version number for interpolate() (pandas-dev#25418)

* DEP: add pytest-mock to environment.yml (pandas-dev#25417)

* BUG: Fix type coercion in read_json orient='table' (pandas-dev#21345) (pandas-dev#25219)

* ERR: doc update for ParsingError (pandas-dev#25414)

Closes pandas-devgh-22881

* ENH: Add in sort keyword to DatetimeIndex.union (pandas-dev#25110)

* DOC: Rewriting of ParserError doc + minor spacing (pandas-dev#25421)

Follow-up to pandas-devgh-25414.

* API/ERR: allow iterators in df.set_index & improve errors (pandas-dev#24984)

* BUG: Indexing with UTC offset string no longer ignored (pandas-dev#25263)

* PERF/REF: improve performance of Series.searchsorted, PandasArray.searchsorted, collect functionality (pandas-dev#22034)

* TST: remove never-used singleton fixtures (pandas-dev#24885)

* BUG: fixed merging with empty frame containing an Int64 column (pandas-dev#25183) (pandas-dev#25289)

* DOC: fixed geo accessor example in extending.rst (pandas-dev#25420)

I realised "lon" and "lat" had just been switched with "longitude" and "latitude" in the following code block. So I used those names here as well.

* TST: numpy RuntimeWarning with Series.round() (pandas-dev#25432)

* CI: add __init__.py to isort skip list (pandas-dev#25455)

* DOC: CategoricalIndex doc string (pandas-dev#24852)

* DataFrame.drop Raises KeyError definition (pandas-dev#25474)

* BUG: Keep column level name in resample nunique (pandas-dev#25469)

Closes pandas-devgh-23222

xref pandas-devgh-23645

* ERR: Correct error message in to_datetime (pandas-dev#25467)

* ERR: Correct error message in to_datetime

Closes pandas-devgh-23830

xref pandas-devgh-23969

* Fix minor typo (pandas-dev#25458)

Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

* CI: Set pytest minversion to 4.0.2 (pandas-dev#25402)

* CI: Set pytest minversion to 4.0.2

* STY: use pytest.raises context manager (indexes) (pandas-dev#25447)

* STY: use pytest.raises context manager (tests/test_*) (pandas-dev#25452)

* STY: use pytest.raises context manager (tests/test_*)

* fix ci failures

* skip py2 ci failure

* Fix minor error in dynamic load function (pandas-dev#25256)

* Cythonized GroupBy Quantile (pandas-dev#20405)

* BUG: Fix regression on DataFrame.replace for regex (pandas-dev#25266)

* BUG: Fix regression on DataFrame.replace for regex

The commit ensures that the replacement for regex is not confined to the 
beginning of the string but spans all the characters within. The 
behaviour is then consistent with versions prior to 0.24.0.

One test has been added to account for character replacement when the 
character is not at the beginning of the string.

* Correct contribution guide docbuild instruction (pandas-dev#25479)

* TST/REF: Add pytest idiom to test_frequencies.py (pandas-dev#25430)

* BUG: Fix index type casting in read_json with orient='table' and float index (pandas-dev#25433) (pandas-dev#25434)

* BUG: Groupby.agg with reduction function with tz aware data (pandas-dev#25308)

* BUG: Groupby.agg cannot reduce with tz aware data

* Handle output always as UTC

* Add whatsnew

* isort and add another fixed groupby.first/last issue

* bring condition at a higher level

* Add try for _try_cast

* Add comments

* Don't pass the utc_dtype explicitly

* Remove unused import

* Use string dtype instead

* DOC: Fix docstring for read_sql_table (pandas-dev#25465)

* ENH: Add Series.str.casefold (pandas-dev#25419)

* Fix PR10 error and Clean up docstrings from functions related to RT05 errors (pandas-dev#25132)

* Fix unreliable test (pandas-dev#25496)

* DOC: Clarifying doc/make.py --single parameter (pandas-dev#25482)

* fix MacPython / pandas-wheels ci failures (pandas-dev#25505)

* DOC: Reword Series.interpolate docstring for clarity (pandas-dev#25491)

* Changed insertion order to sys.path (pandas-dev#25486)

* TST: xfail non-writeable pytables tests with numpy 1.16x (pandas-dev#25517)

* STY: use pytest.raises context manager (arithmetic, arrays, computati… (pandas-dev#25504)

* BUG: Fix RecursionError during IntervalTree construction (pandas-dev#25498)

* STY: use pytest.raises context manager (plotting, reductions, scalar...) (pandas-dev#25483)

* STY: use pytest.raises context manager (plotting, reductions, scalar...)

* revert removed testing in test_timedelta.py

* remove TODO from test_frame.py

* skip py2 ci failure

* BUG: Fix potential segfault after pd.Categorical(pd.Series(...), categories=...) (pandas-dev#25368)

* Make DataFrame.to_html output full content (pandas-dev#24841)

* BUG-16807-1 SparseFrame fills with default_fill_value if data is None (pandas-dev#24842)

Closes pandas-devgh-16807.

* DOC: Add conda uninstall pandas to contributing guide (pandas-dev#25490)

* fix pandas-dev#25487 add modify documentation

* fix segfault when running with cython coverage enabled, xref cython#2879 (pandas-dev#25529)

* TST: inline empty_frame = DataFrame({}) fixture (pandas-dev#24886)

* DOC: Polishing typos out of doc/source/user_guide/indexing.rst (pandas-dev#25528)

* STY: use pytest.raises context manager (frame) (pandas-dev#25516)

* DOC: Fix pandas-dev#24268 by updating description for keep in Series.nlargest (pandas-dev#25358)

* DOC: Fix pandas-dev#24268 by updating description for keep

* fix MacPython / pandas-wheels ci failures (pandas-dev#25537)

*  TST/CLN: Remove more Panel tests (pandas-dev#25550)

* BUG: caught typeError in series.at (pandas-dev#25506) (pandas-dev#25533)

* ENH: Add errors parameter to DataFrame.rename (pandas-dev#25535)

* ENH: GH13473 Add errors parameter to DataFrame.rename

* TST: Skip IntervalTree construction overflow test on 32bit (pandas-dev#25558)

* DOC: Small fixes to 0.24.2 whatsnew (pandas-dev#25559)

* minor typo error (pandas-dev#25574)

* BUG: in error message raised when invalid axis parameter (pandas-dev#25553)

* BLD: Fixed pip install with no numpy (pandas-dev#25568)

* Document the behavior of `axis=None` with `style.background_gradient` (pandas-dev#25551)

* fix minor typos in dsintro.rst (pandas-dev#25579)

* BUG: Handle readonly arrays in period_array (pandas-dev#25556)

* BUG: Handle readonly arrays in period_array

Closes pandas-dev#25403

* DOC: Fix typo in tz_localize (pandas-dev#25598)

* BUG: secondary y axis could not be set to log scale (pandas-dev#25545) (pandas-dev#25586)

* TST: add test for groupby on list of empty list (pandas-dev#25589)

* TYPING: Small fixes to make stubgen happy (pandas-dev#25576)

* CLN: Parmeterize test cases (pandas-dev#25355)

hksonngan pushed a commit to hksonngan/pandas that referenced this issue Mar 12, 2019

BUG: Handle readonly arrays in period_array (pandas-dev#25556)
* BUG: Handle readonly arrays in period_array

Closes pandas-dev#25403

hksonngan pushed a commit to hksonngan/pandas that referenced this issue Mar 12, 2019

BUG: Handle readonly arrays in period_array (pandas-dev#25556)
* BUG: Handle readonly arrays in period_array

Closes pandas-dev#25403

alimcmaster1 added a commit to alimcmaster1/pandas that referenced this issue Jun 3, 2019

BUG: Handle readonly arrays in period_array (pandas-dev#25556)
* BUG: Handle readonly arrays in period_array

Closes pandas-dev#25403
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