10000 bpo-40360: Deprecate lib2to3 module in light of PEP 617 by carljm · Pull Request #19663 · python/cpython · GitHub
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bpo-40360: Deprecate lib2to3 module in light of PEP 617 #19663

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Merged
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Apr 24, 2020
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bpo-40360: Deprecate lib2to3 module in light of PEP 617 #19663

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Deprecate lib2to3 module in light of PEP 617.
carljm Apr 22, 2020
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📜🤖 Added by blurb_it.
blurb-it[bot] Apr 22, 2020
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carljm Apr 22, 2020
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Fix AllTest.
carljm Apr 22, 2020
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carljm committed Apr 22, 2020
commit c511f0481d1b9f869c1d8f613db17da38aa06ec9
6 changes: 5 additions & 1 deletion Doc/library/2to3.rst
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Expand Up @@ -468,9 +468,13 @@ and off individually. They are described here in more detail.
Python 3.9 will switch to a PEG parser (see :pep:`617`), and Python 3.10 may
include new language syntax that is not parsable by lib2to3's LL(1) parser.
The ``lib2to3`` module may be removed from the standard library in a future
Python version.
Python version. Consider third-party alternatives such as `LibCST`_ or
`parso`_.

.. note::

The :mod:`lib2to3` API should be considered unstable and may change
drastically in the future.

.. _LibCST: https://libcst.readthedocs.io/
.. _parso: https://parso.readthedocs.io/
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