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| author | Barry Warsaw <barry@python.org> | 2017-11-21 15:28:13 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-11-21 15:28:13 (GMT) |
| commit | e256b408889eba867e1d90e5e1a0904843256255 (patch) | |
| tree | 3bbec9153c33ddd4eb95ceb19ae3b244e9490438 /Doc/library/string.rst | |
| parent | 337cbbace0a43f50fcd33ea4d3b7cb30733237db (diff) | |
| download | cpython-e256b408889eba867e1d90e5e1a0904843256255.zip cpython-e256b408889eba867e1d90e5e1a0904843256255.tar.gz cpython-e256b408889eba867e1d90e5e1a0904843256255.tar.bz2 | |
bpo-31672 - Add one last minor clarification for idpattern (#4483)
Add one last minor clarification for idpattern
Diffstat (limited to 'Doc/library/string.rst')
| -rw-r--r-- | Doc/library/string.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Doc/library/string.rst b/Doc/library/string.rst index 5b25428..e960678 100644 --- a/Doc/library/string.rst +++ b/Doc/library/string.rst @@ -755,13 +755,15 @@ attributes: * *idpattern* -- This is the regular expression describing the pattern for non-braced placeholders. The default value is the regular expression - ``(?-i:[_a-zA-Z][_a-zA-Z0-9]*)``. If this is given and *braceidpattern* is + ``(?a:[_a-zA-Z][_a-zA-Z0-9]*)``. If this is given and *braceidpattern* is ``None`` this pattern will also apply to braced placeholders. .. note:: Since default *flags* is ``re.IGNORECASE``, pattern ``[a-z]`` can match - with some non-ASCII characters. That's why we use local ``-i`` flag here. + with some non-ASCII characters. That's why we use the local ``a`` flag + here. Further, with the default *flags* value, including ``A-Z`` in the + ranges is redundant, but required for backward compatibility. While *flags* is kept to ``re.IGNORECASE`` for backward compatibility, you can override it to ``0`` or ``re.IGNORECASE | re.ASCII`` when |