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| author | Guido van Rossum <guido@python.org> | 2019-03-07 12:38:08 -0800 |
|---|---|---|
| committer | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2019-03-07 12:38:08 -0800 |
| commit | 495da292255b92dd73758fdd0e4c7d27d82b1e57 (patch) | |
| tree | 1378cf049d2d125593fa970ea1e9a9f77604fab1 /Lib/keyword.py | |
| parent | bf94cc7b496a379e1f604aa2e4080bb70ca4020e (diff) | |
| download | cpython-git-495da292255b92dd73758fdd0e4c7d27d82b1e57.tar.gz | |
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
Diffstat (limited to 'Lib/keyword.py')
| -rwxr-xr-x | Lib/keyword.py | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Lib/keyword.py b/Lib/keyword.py index 431991dcf4..150c2bc46d 100755 --- a/Lib/keyword.py +++ b/Lib/keyword.py @@ -20,8 +20,6 @@ kwlist = [ 'and', 'as', 'assert', - 'async', - 'await', 'break', 'class', 'continue', @@ -52,6 +50,10 @@ kwlist = [ #--end keywords-- ] +kwlist.append('async') +kwlist.append('await') +kwlist.sort() + iskeyword = frozenset(kwlist).__contains__ def main(): |