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Version History
===============
.. automodule:: more_itertools
4.2.0
-----
* New itertools:
* :func:`map_reduce` (thanks to pylang)
* :func:`prepend` (from the `Python 3.7 docs <https://docs.python.org/3.7/library/itertools.html#itertools-recipes>`_)
* Improvements to existing itertools:
* :func:`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
4.1.0
-----
* New itertools:
* :func:`split_at` (thanks to michael-celani)
* :func:`circular_shifts` (thanks to hiqua)
* :func:`make_decorator` - see the blog post `Yo, I heard you like decorators <https://sites.google.com/site/bbayles/index/decorator_factory>`_
for a tour (thanks to pylang)
* :func:`always_reversible` (thanks to michael-celani)
* :func:`nth_combination` (from the `Python 3.7 docs <https://docs.python.org/3.7/library/itertools.html#itertools-recipes>`_)
* Improvements to existing itertools:
* :func:`seekable` now has an ``elements`` method to return cached items.
* The performance tradeoffs between :func:`roundrobin` and
:func:`interleave_longest` are now documented (thanks michael-celani,
pylang, and MSeifert04)
4.0.1
-----
* No code changes - this release fixes how the docs display on PyPI.
4.0.0
-----
* New itertools:
* :func:`consecutive_groups` (Based on the example in the `Python 2.4 docs <https://docs.python.org/release/2.4.4/lib/itertools-example.html>`_)
* :func:`seekable` (If you're looking for how to "reset" an iterator,
you're in luck!)
* :func:`exactly_n` (thanks to michael-celani)
* :func:`run_length.encode` and :func:`run_length.decode`
* :func:`difference`
* Improvements to existing itertools:
* The number of items between filler elements in :func:`intersperse` can
now be specified (thanks to pylang)
* :func:`distinct_permutations` and :func:`peekable` got some minor
adjustments (thanks to MSeifert04)
* :func:`always_iterable` now returns an iterator object. It also now
allows different types to be considered iterable (thanks to jaraco)
* :func:`bucket` can now limit the keys it stores in memory
* :func:`one` now allows for custom exceptions (thanks to kalekundert)
* 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 :func:`always_iterable`.
It now always returns iterator objects:
.. code-block:: python
>>> 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>
3.2.0
-----
* New itertools:
* :func:`lstrip`, :func:`rstrip`, and :func:`strip`
(thanks to MSeifert04 and pylang)
* :func:`islice_extended`
* Improvements to existing itertools:
* Some bugs with slicing :func:`peekable`-wrapped iterables were fixed
3.1.0
-----
* New itertools:
* :func:`numeric_range` (Thanks to BebeSparkelSparkel and MSeifert04)
* :func:`count_cycle` (Thanks to BebeSparkelSparkel)
* :func:`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)
3.0.0
-----
* 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 supports ``before`` and ``after`` 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:
.. code-block:: python
# 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')
2.6.0
-----
* New itertools:
* ``adjacent`` and ``groupby_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)
2.5.0
-----
* New itertools:
* ``distribute`` (Thanks to mozbhearsum and coady)
* ``sort_together`` (Thanks to clintval)
* ``stagger`` and ``zip_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 a ``step`` keyword argument.
(Thanks to pylang)
* Python 3.6 is now supported.
2.4.1
-----
* Move docs 100% to readthedocs.io.
2.4
-----
* New itertools:
* ``accumulate``, ``all_equal``, ``first_true``, ``partition``, and
``tail`` from the itertools documentation.
* ``bucket`` (Thanks to Rosuav and cvrebert)
* ``collapse`` (Thanks to abarnet)
* ``interleave`` and ``interleave_longest`` (Thanks to abarnet)
* ``side_effect`` (Thanks to nvie)
* ``sliced`` (Thanks to j4mie and coady)
* ``split_before`` and ``split_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 to ``heapq.merge`` when possible.
(Thanks to kmike and julianpistorius)
* ``peekable``-wrapped iterables are now indexable and sliceable.
Iterating through ``peekable``-wrapped iterables is also faster.
* ``one`` and ``unique_to_each`` have been simplified.
(Thanks to coady)
2.3
-----
* Added ``one`` from ``jaraco.util.itertools``. (Thanks, jaraco!)
* Added ``distinct_permutations`` and ``unique_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.
2.2
-----
* Added ``iterate`` and ``with_iter``. (Thanks, abarnert!)
2.1
-----
* Added (tested!) implementations of the recipes from the itertools
documentation. (Thanks, Chris Lonnen!)
* Added ``ilen``. (Thanks for the inspiration, Matt Basta!)
2.0
-----
* ``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.
1.1
-----
* 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.
1.0
-----
* Initial release, with ``collate``, ``peekable``, and ``chunked``. Could
really use better docs.