diff options
| 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 /Grammar/Tokens | |
| 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 'Grammar/Tokens')
| -rw-r--r-- | Grammar/Tokens | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Grammar/Tokens b/Grammar/Tokens index 1d45e05ea2..9de2da5d15 100644 --- a/Grammar/Tokens +++ b/Grammar/Tokens @@ -55,6 +55,8 @@ ELLIPSIS '...' COLONEQUAL ':=' OP +AWAIT +ASYNC TYPE_IGNORE TYPE_COMMENT ERRORTOKEN |