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| author | Serhiy Storchaka <storchaka@gmail.com> | 2017-11-16 10:38:26 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-11-16 10:38:26 (GMT) |
| commit | 05cb728d68a278d11466f9a6c8258d914135c96c (patch) | |
| tree | da7fd67bdacf4239d820bcf40cad9f60cab9fb82 /Doc/whatsnew | |
| parent | 3daaafb700df45716bb55f3a293f88773baf3463 (diff) | |
| download | cpython-05cb728d68a278d11466f9a6c8258d914135c96c.zip cpython-05cb728d68a278d11466f9a6c8258d914135c96c.tar.gz cpython-05cb728d68a278d11466f9a6c8258d914135c96c.tar.bz2 | |
bpo-30349: Raise FutureWarning for nested sets and set operations (#1553)
in regular expressions.
Diffstat (limited to 'Doc/whatsnew')
| -rw-r--r-- | Doc/whatsnew/3.7.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst index a2fea50..9d63540 100644 --- a/Doc/whatsnew/3.7.rst +++ b/Doc/whatsnew/3.7.rst @@ -700,6 +700,17 @@ Changes in the Python API argument ``os.scandir`` instead of ``os.listdir`` when listing the direcory is failed. +* Support of nested sets and set operations in regular expressions as in + `Unicode Technical Standard #18`_ might be added in the future. This would + change the syntax, so to facilitate this change a :exc:`FutureWarning` will + be raised in ambiguous cases for the time being. + That include sets starting with a literal ``'['`` or containing literal + character sequences ``'--'``, ``'&&'``, ``'~~'``, and ``'||'``. To + avoid a warning escape them with a backslash. + (Contributed by Serhiy Storchaka in :issue:`30349`.) + +.. _Unicode Technical Standard #18: https://unicode.org/reports/tr18/ + Changes in the C API -------------------- |