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Title: bpo-27494: Fix 2to3 handling of trailing comma after a generator expression by jstasiak · Pull Request #3771 · python/cpython · GitHub

Open Graph Title: bpo-27494: Fix 2to3 handling of trailing comma after a generator expression by jstasiak · Pull Request #3771 · python/cpython

X Title: bpo-27494: Fix 2to3 handling of trailing comma after a generator expression by jstasiak · Pull Request #3771 · python/cpython

Description: While this is a valid Python 2 and Python 3 syntax lib2to3 would choke on it: set(x for x in [],) This patch changes the grammar definition used by lib2to3 so that the actual Python syntax is supported now and backwards compatibility is preserved. https://bugs.python.org/issue27494 Note: there are some issues with the build of the first pull request I created (#60) to merge this change so this is a replacement pull request I create, hoping it'll fix things.

Open Graph Description: While this is a valid Python 2 and Python 3 syntax lib2to3 would choke on it: set(x for x in [],) This patch changes the grammar definition used by lib2to3 so that the actual Python syntax is s...

X Description: While this is a valid Python 2 and Python 3 syntax lib2to3 would choke on it: set(x for x in [],) This patch changes the grammar definition used by lib2to3 so that the actual Python syntax is s...

Opengraph URL: https://github.com/python/cpython/pull/3771

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