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| author | Mark Summerfield <list@qtrac.plus.com> | 2008-05-31 13:05:34 (GMT) |
|---|---|---|
| committer | Mark Summerfield <list@qtrac.plus.com> | 2008-05-31 13:05:34 (GMT) |
| commit | 9e670c216164bd9e437ffefeba31fb0a7865b932 (patch) | |
| tree | a92547d3a4075ae66f21a8ae7f3d924d393b3c07 /Doc/library/re.rst | |
| parent | 1d138f1c1a37a630099b629cf42c0bbe46d1344b (diff) | |
| download | cpython-9e670c216164bd9e437ffefeba31fb0a7865b932.zip cpython-9e670c216164bd9e437ffefeba31fb0a7865b932.tar.gz cpython-9e670c216164bd9e437ffefeba31fb0a7865b932.tar.bz2 | |
Added a note to [] that special forms & special chars lose their meaning
and backrefs can't be used inside []
Diffstat (limited to 'Doc/library/re.rst')
| -rw-r--r-- | Doc/library/re.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Doc/library/re.rst b/Doc/library/re.rst index 707eedf..5831364 100644 --- a/Doc/library/re.rst +++ b/Doc/library/re.rst @@ -181,6 +181,12 @@ The special characters are: ``[^5]`` will match any character except ``'5'``, and ``[^^]`` will match any character except ``'^'``. + Note that inside ``[]`` the special forms and special characters lose + their meanings and only the syntaxes described here are valid. For + example, ``+``, ``*``, ``(``, ``)``, and so on are treated as + literals inside ``[]``, and backreferences cannot be used inside + ``[]``. + ``'|'`` ``A|B``, where A and B can be arbitrary REs, creates a regular expression that will match either A or B. An arbitrary number of REs can be separated by the |