more_itertools
- New itertools
mark_ends
(thanks to kalekundert)is_sorted
- Changes to existing itertools:
islice_extended
can now be used with real slices (thanks to cool-RR)- The implementations for
filter_except
andmap_except
were improved (thanks to SergBobrovsky)
- Other changes
- Automated tests now enforce code style (using black)
- The various signatures of
islice_extended
andnumeric_range
now appear in the docs (thanks to dsfulf) - The test configuration for mypy was updated (thanks to blueyed)
- New itertools
zip_equal
(thanks to frankier and alexmojaki)
- Changes to existing itertools:
split_at
,split_before
,split_after
, andsplit_when
all got amaxsplit
paramter (thanks to jferard and ilai-deutel)split_at
now accepts akeep_separator
parameter (thanks to jferard)distinct_permutations
can now generater
-length permutations (thanks to SergBobrovsky and ilai-deutel)- The
windowed
implementation was improved (thanks to SergBobrovsky) - The
spy
implementation was improved (thanks to has2k1)
- Other changes
- Type stubs are now tested with
stubtest
(thankjs to ilai-deutel) - Tests now run with
python -m unittest
instead ofpython setup.py test
(thanks to jdufresne)
- Type stubs are now tested with
- Bug fixes
- The .pyi files for typing were updated. (thanks to blueyed and ilai-deutel)
- Changes to existing itertools:
numeric_range
now behaves more like the built-inrange
. (thanks to jferard)bucket
now allows for enumerating keys. (thanks to alexchandel)sliced
now should now work for numpy arrays. (thanks to sswingle)seekable
now has amaxlen
parameter.
- Bug fixes
partition
works withpred=None
again. (thanks to MSeifert04)
- New itertools
sample
(thanks to tommyod)nth_or_last
(thanks to d-ryzhikov)
- Changes to existing itertools:
- The implementation for
divide
was improved. (thanks to jferard)
- The implementation for
- Bug fixes
- The type stub files are now part of the wheel distribution (thanks to keisheiled)
- Bug fixes
- The type stub files now work for functions imported from the root package (thanks to keisheiled)
- New itertools and other additions
- This library now ships type hints for use with mypy. (thanks to ilai-deutel for the implementation, and to gabbard and fmagin for assistance)
split_when
(thanks to jferard)repeat_last
(thanks to d-ryzhikov)
- Changes to existing itertools:
- The implementation for
set_partitions
was improved. (thanks to jferard) partition
was optimized for expensive predicates. (thanks to stevecj)unique_everseen
andgroupby_transform
were re-factored. (thanks to SergBobrovsky)- The implementation for
difference
was improved. (thanks to Jabbey92)
- The implementation for
- Other changes
- Python 3.4 has reached its end of life and is no longer supported.
- Python 3.8 is officially supported. (thanks to jdufresne)
- The
collate
function has been deprecated. It raises aDeprecationWarning
if used, and will be removed in a future release. one
andonly
now provide more informative error messages. (thanks to gabbard)- Unit tests were moved outside of the main package (thanks to jdufresne)
- Various documentation fixes (thanks to kriomant, gabbard, jdufresne)
- New itertools
distinct_combinations
set_partitions
(thanks to kbarrett)filter_except
map_except
- New itertools
ichunked
(thanks davebelais and youtux)only
(thanks jaraco)
- Changes to existing itertools:
numeric_range
now supports ranges specified bydatetime.datetime
anddatetime.timedelta
objects (thanks to MSeifert04 for tests).difference
now supports an initial keyword argument.
- Other changes
- Various documentation fixes (thanks raimon49, pylang)
- New itertools:
time_limited
partitions
(thanks to rominf and Saluev)substrings_indexes
(thanks to rominf)
- Changes to existing itertools:
collapse
now treatsbytes
objects the same asstr
objects. (thanks to Sweenpet)
The major version update is due to the change in the default behavior of collapse
. It now treats bytes
objects the same as str
objects. This aligns its behavior with always_iterable
.
>>> from more_itertools import collapse
>>> iterable = [[1, 2], b'345', [6]]
>>> print(list(collapse(iterable)))
[1, 2, b'345', 6]
- Major changes:
- Python 2.7 is no longer supported. The 5.0.0 release will be the last version targeting Python 2.7.
- All future releases will target the active versions of Python 3. As of 2019, those are Python 3.4 and above.
- The
six
library is no longer a dependency. - The
accumulate
function is no longer part of this library. You may import a better version from the standarditertools
module.
- Changes to existing itertools:
- The order of the parameters in
grouper
have changed to match the latest recipe in the itertools documentation. Use of the old order will be supported in this release, but emit aDeprecationWarning
. The legacy behavior will be dropped in a future release. (thanks to jaraco) distinct_permutations
was improved (thanks to jferard - see also permutations with unique values at StackOverflow.)- An unused parameter was removed from
substrings
. (thanks to pylang)
- The order of the parameters in
- Other changes:
- The docs for
unique_everseen
were improved. (thanks to jferard and MSeifert04) - Several Python 2-isms were removed. (thanks to jaraco, MSeifert04, and hugovk)
- The docs for
- New itertools:
split_into
(thanks to rovyko)unzip
(thanks to bmintz)substrings
(thanks to pylang)
- Changes to existing itertools:
ilen
was optimized a bit (thanks to MSeifert04, achampion, and bmintz)first_true
now returnsNone
by default. This is the reason for the major version bump - see below. (thanks to sk and OJFord)
- Other changes:
- Some code for old Python versions was removed (thanks to hugovk)
- Some documentation mistakes were corrected (thanks to belm0 and hugovk)
- Tests now run properly on 32-bit versions of Python (thanks to Millak)
- Newer versions of CPython and PyPy are now tested against
The major version update is due to the change in the default return value of first_true
. It's now None
.
>>> from more_itertools import first_true
>>> iterable = [0, '', False, [], ()] # All these are False
>>> answer = first_true(iterable)
>>> print(answer)
None
- New itertools:
last
(thanks to tmshn)replace
(thanks to pylang)rlocate
(thanks to jferard and pylang)
- Improvements to existing itertools:
locate
can now search for multiple items
- Other changes:
- The docs now include a nice table of tools (thanks MSeifert04)
- New itertools:
map_reduce
(thanks to pylang)prepend
(from the Python 3.7 docs)
- Improvements to existing itertools:
bucket
now complies with PEP 479 (thanks to irmen)
- Other changes:
- Python 3.7 is now supported (thanks to irmen)
- Python 3.3 is no longer supported
- The test suite no longer requires third-party modules to run
- The API docs now include links to source code
- New itertools:
split_at
(thanks to michael-celani)circular_shifts
(thanks to hiqua)make_decorator
- see the blog post Yo, I heard you like decorators for a tour (thanks to pylang)always_reversible
(thanks to michael-celani)nth_combination
(from the Python 3.7 docs)
- Improvements to existing itertools:
seekable
now has anelements
method to return cached items.- The performance tradeoffs between
roundrobin
andinterleave_longest
are now documented (thanks michael-celani, pylang, and MSeifert04)
- No code changes - this release fixes how the docs display on PyPI.
- New itertools:
consecutive_groups
(Based on the example in the Python 2.4 docs)seekable
(If you're looking for how to "reset" an iterator, you're in luck!)exactly_n
(thanks to michael-celani)run_length.encode
andrun_length.decode
difference
- Improvements to existing itertools:
- The number of items between filler elements in
intersperse
can now be specified (thanks to pylang) distinct_permutations
andpeekable
got some minor adjustments (thanks to MSeifert04)always_iterable
now returns an iterator object. It also now allows different types to be considered iterable (thanks to jaraco)bucket
can now limit the keys it stores in memoryone
now allows for custom exceptions (thanks to kalekundert)
- The number of items between filler elements in
- Other changes:
- A few typos were fixed (thanks to EdwardBetts)
- All tests can now be run with
python setup.py test
The major version update is due to the change in the return value of always_iterable
. It now always returns iterator objects:
>>> from more_itertools import always_iterable
# Non-iterable objects are wrapped with iter(tuple(obj))
>>> always_iterable(12345)
<tuple_iterator object at 0x7fb24c9488d0>
>>> list(always_iterable(12345))
[12345]
# Iterable objects are wrapped with iter()
>>> always_iterable([1, 2, 3, 4, 5])
<list_iterator object at 0x7fb24c948c50>
- New itertools:
lstrip
,rstrip
, andstrip
(thanks to MSeifert04 and pylang)islice_extended
- Improvements to existing itertools:
- Some bugs with slicing
peekable
-wrapped iterables were fixed
- Some bugs with slicing
- New itertools:
numeric_range
(Thanks to BebeSparkelSparkel and MSeifert04)count_cycle
(Thanks to BebeSparkelSparkel)locate
(Thanks to pylang and MSeifert04)
- Improvements to existing itertools:
- A few itertools are now slightly faster due to some function optimizations. (Thanks to MSeifert04)
- The docs have been substantially revised with installation notes, categories for library functions, links, and more. (Thanks to pylang)
- Removed itertools:
context
has been removed due to a design flaw - see below for replacement options. (thanks to NeilGirdhar)
- Improvements to existing itertools:
side_effect
now supportsbefore
andafter
keyword arguments. (Thanks to yardsale8)
- PyPy and PyPy3 are now supported.
The major version change is due to the removal of the context
function. Replace it with standard with
statement context management:
# Don't use context() anymore
file_obj = StringIO()
consume(print(x, file=f) for f in context(file_obj) for x in u'123')
# Use a with statement instead
file_obj = StringIO()
with file_obj as f:
consume(print(x, file=f) for x in u'123')
- New itertools:
adjacent
andgroupby_transform
(Thanks to diazona)always_iterable
(Thanks to jaraco)- (Removed in 3.0.0)
context
(Thanks to yardsale8) divide
(Thanks to mozbhearsum)
- Improvements to existing itertools:
ilen
is now slightly faster. (Thanks to wbolster)peekable
can now prepend items to an iterable. (Thanks to diazona)
- New itertools:
distribute
(Thanks to mozbhearsum and coady)sort_together
(Thanks to clintval)stagger
andzip_offset
(Thanks to joshbode)padded
- Improvements to existing itertools:
peekable
now handles negative indexes and slices with negative components properly.intersperse
is now slightly faster. (Thanks to pylang)windowed
now accepts astep
keyword argument. (Thanks to pylang)
- Python 3.6 is now supported.
- Move docs 100% to readthedocs.io.
- New itertools:
accumulate
,all_equal
,first_true
,partition
, andtail
from the itertools documentation.bucket
(Thanks to Rosuav and cvrebert)collapse
(Thanks to abarnet)interleave
andinterleave_longest
(Thanks to abarnet)side_effect
(Thanks to nvie)sliced
(Thanks to j4mie and coady)split_before
andsplit_after
(Thanks to astronouth7303)spy
(Thanks to themiurgo and mathieulongtin)
- Improvements to existing itertools:
chunked
is now simpler and more friendly to garbage collection. (Contributed by coady, with thanks to piskvorky)collate
now delegates toheapq.merge
when possible. (Thanks to kmike and julianpistorius)peekable
-wrapped iterables are now indexable and sliceable. Iterating throughpeekable
-wrapped iterables is also faster.one
andunique_to_each
have been simplified. (Thanks to coady)
- Added
one
fromjaraco.util.itertools
. (Thanks, jaraco!) - Added
distinct_permutations
andunique_to_each
. (Contributed by bbayles) - Added
windowed
. (Contributed by bbayles, with thanks to buchanae, jaraco, and abarnert) - Simplified the implementation of
chunked
. (Thanks, nvie!) - Python 3.5 is now supported. Python 2.6 is no longer supported.
- Python 3 is now supported directly; there is no 2to3 step.
- Added
iterate
andwith_iter
. (Thanks, abarnert!)
- Added (tested!) implementations of the recipes from the itertools documentation. (Thanks, Chris Lonnen!)
- Added
ilen
. (Thanks for the inspiration, Matt Basta!)
chunked
now returns lists rather than tuples. After all, they're homogeneous. This slightly backward-incompatible change is the reason for the major version bump.- Added
@consumer
. - Improved test machinery.
- Added
first
function. - Added Python 3 support.
- Added a default arg to
peekable.peek()
. - Noted how to easily test whether a peekable iterator is exhausted.
- Rewrote documentation.
- Initial release, with
collate
,peekable
, andchunked
. Could really use better docs.