[3.6] bpo-24960: use pkgutil.get_data in lib2to3 to read pickled grammar files (GH-4977) #4979
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…les (pythonGH-4977) 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 8a58771)
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@benjaminp: Backport status check is done, and it's a success ✅ . |
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Thanks, @benjaminp! |
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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 8a58771)
https://bugs.python.org/issue24960