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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2020-02-14 00:03:13 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-02-14 00:03:12 (GMT) |
| commit | 46cf4fc8a5646ca35f7d1ac06d2ef33eb9efca1d (patch) | |
| tree | 71340e618441854fd8b0c57b1dd2d5711ccc89ac /Doc/reference | |
| parent | f464edf3239f7867fe31c9cd238a68fb3b90feaa (diff) | |
| download | cpython-46cf4fc8a5646ca35f7d1ac06d2ef33eb9efca1d.zip cpython-46cf4fc8a5646ca35f7d1ac06d2ef33eb9efca1d.tar.gz cpython-46cf4fc8a5646ca35f7d1ac06d2ef33eb9efca1d.tar.bz2 | |
bpo-39545: Document changes in the support of await in f-strings. (GH-18456)
https://bugs.python.org/issue39545
(cherry picked from commit f632736023502816f2e6bd714d1b48c81aa2ccc1)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Diffstat (limited to 'Doc/reference')
| -rw-r--r-- | Doc/reference/lexical_analysis.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Doc/reference/lexical_analysis.rst b/Doc/reference/lexical_analysis.rst index 7b90f3b..9f51f41 100644 --- a/Doc/reference/lexical_analysis.rst +++ b/Doc/reference/lexical_analysis.rst @@ -683,6 +683,11 @@ can contain line breaks (e.g. in triple-quoted strings), but they cannot contain comments. Each expression is evaluated in the context where the formatted string literal appears, in order from left to right. +.. versionchanged:: 3.7 + Prior to Python 3.7, an :keyword:`await` expression and comprehensions + containing an :keyword:`async for` clause were illegal in the expressions + in formatted string literals due to a problem with the implementation. + If a conversion is specified, the result of evaluating the expression is converted before formatting. Conversion ``'!s'`` calls :func:`str` on the result, ``'!r'`` calls :func:`repr`, and ``'!a'`` calls :func:`ascii`. |