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bpo-24960: use pkgutil.get_data in lib2to3 to read pickled grammar files (GH-4977...
authorMiss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Fri, 22 Dec 2017 20:51:46 +0000 (12:51 -0800)
committerBenjamin Peterson <benjamin@python.org>
Fri, 22 Dec 2017 20:51:46 +0000 (12:51 -0800)
commitc1b8eb8006ed79bbf91dc7d89918f39cc10b4fe6
tree0736b8d7f637e6f4cf4c4d0c26fa0cfa04398d02tree | snapshot
parent2e1ef00171179a8b906631b175cde2e68a804522commit | diff
bpo-24960: use pkgutil.get_data in lib2to3 to read pickled grammar files (GH-4977) (#4979)

This is more complicated than it should be because we need to preserve the
useful mtime-based regeneration feature that lib2to3.pgen2.driver.load_grammar
has. We only look for the pickled grammar file with pkgutil.get_data and only if
the source file does not exist.
(cherry picked from commit 8a5877165e993afb2633cd48da5222326d3f6e0e)
Lib/lib2to3/pgen2/driver.py diff | blob | blame | history
Lib/lib2to3/pgen2/grammar.py diff | blob | blame | history
Lib/lib2to3/pygram.py diff | blob | blame | history
Lib/lib2to3/tests/test_parser.py diff | blob | blame | history
Misc/NEWS.d/next/Tools-Demos/2017-12-22-09-25-51.bpo-24960.TGdAgO.rst [new file with mode: 0644] blob
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