Guido van Rossum 495da29225 bpo-35975: Support parsing earlier minor versions of Python 3 (GH-12086) ... This adds a `feature_version` flag to `ast.parse()` (documented) and `compile()` (hidden) that allow tweaking the parser to support older versions of the grammar. In particular if `feature_version` is 5 or 6, the hacks for the `async` and `await` keyword from PEP 492 are reinstated. (For 7 or higher, these are unconditionally treated as keywords, but they are still special tokens rather than `NAME` tokens that the parser driver recognizes.) https://bugs.python.org/issue35975		2019-03-07 12:38:08 -08:00
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Grammar	bpo-35975: Support parsing earlier minor versions of Python 3 (GH-12086)	2019-03-07 12:38:08 -08:00
Tokens	bpo-35975: Support parsing earlier minor versions of Python 3 (GH-12086)	2019-03-07 12:38:08 -08:00