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bpo-43785: Update bz2 document (GH-25351)

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Inada Naoki 2021-04-14 08:22:49 +09:00 committed by GitHub
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3 changed files with 12 additions and 4 deletions
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7
Doc/library/bz2.rst
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@ -25,8 +25,6 @@ The :mod:`bz2` module contains:
* The :func:`compress` and :func:`decompress` functions for one-shot * The :func:`compress` and :func:`decompress` functions for one-shot
(de)compression. (de)compression.
All of the classes in this module may safely be accessed from multiple threads.
(De)compression of files (De)compression of files
------------------------ ------------------------
@ -140,6 +138,11 @@ All of the classes in this module may safely be accessed from multiple threads.
The *compresslevel* parameter became keyword-only. The *compresslevel* parameter became keyword-only.
.. versionchanged:: 3.10
This class is thread unsafe in the face of multiple simultaneous
readers or writers, just like its equivalent classes in :mod:`gzip` and
:mod:`lzma` have always been.
Incremental (de)compression Incremental (de)compression
--------------------------- ---------------------------

4
Doc/library/lzma.rst
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@ -19,8 +19,8 @@ interface supporting the ``.xz`` and legacy ``.lzma`` file formats used by the
:program:`xz` utility, as well as raw compressed streams. :program:`xz` utility, as well as raw compressed streams.
The interface provided by this module is very similar to that of the :mod:`bz2` The interface provided by this module is very similar to that of the :mod:`bz2`
module. However, note that :class:`LZMAFile` is *not* thread-safe, unlike module. Note that :class:`LZMAFile` and :class:`bz2.BZ2File` are *not*
:class:`bz2.BZ2File`, so if you need to use a single :class:`LZMAFile` instance thread-safe, so if you need to use a single :class:`LZMAFile` instance
from multiple threads, it is necessary to protect it with a lock. from multiple threads, it is necessary to protect it with a lock.

5
Doc/whatsnew/3.10.rst
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@ -1013,6 +1013,11 @@ Optimizations
:func:`map`, :func:`filter`, :func:`reversed`, :func:`bool` and :func:`float`. :func:`map`, :func:`filter`, :func:`reversed`, :func:`bool` and :func:`float`.
(Contributed by Dong-hee Na and Jeroen Demeyerin in :issue:`43575`, :issue:`43287`, :issue:`41922`, :issue:`41873` and :issue:`41870`) (Contributed by Dong-hee Na and Jeroen Demeyerin in :issue:`43575`, :issue:`43287`, :issue:`41922`, :issue:`41873` and :issue:`41870`)
* :class:`BZ2File` performance is improved by removing internal ``RLock``.
This makes :class:`BZ2File` thread unsafe in the face of multiple simultaneous
readers or writers, just like its equivalent classes in :mod:`gzip` and
:mod:`lzma` have always been. (Contributed by Inada Naoki in :issue:`43785`).
Deprecated Deprecated
========== ==========