New submission from py.user <[email protected]>:
http://docs.python.org/py3k/library/re.html
"(?P<name>...)
Similar to regular parentheses, but the substring matched by the group is
accessible within the rest of the regular expression via the symbolic group
name name. Group names must be valid Python identifiers, and each group name
must be defined only once within a regular expression."
>>> chr(255)
'ÿ'
>>> 'ÿ'.isidentifier()
True
>>> import re
>>> re.search(r'(?P<ÿ>a)', 'abc')
Traceback (most recent call last):
File "/usr/local/lib/python3.2/functools.py", line 176, in wrapper
result = cache[key]
KeyError: (<class 'str'>, '(?P<ÿ>a)', 0)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.2/re.py", line 158, in search
return _compile(pattern, flags).search(string)
File "/usr/local/lib/python3.2/re.py", line 255, in _compile
return _compile_typed(type(pattern), pattern, flags)
File "/usr/local/lib/python3.2/functools.py", line 180, in wrapper
result = user_function(*args, **kwds)
File "/usr/local/lib/python3.2/re.py", line 267, in _compile_typed
return sre_compile.compile(pattern, flags)
File "/usr/local/lib/python3.2/sre_compile.py", line 491, in compile
p = sre_parse.parse(p, flags)
File "/usr/local/lib/python3.2/sre_parse.py", line 692, in parse
p = _parse_sub(source, pattern, 0)
File "/usr/local/lib/python3.2/sre_parse.py", line 315, in _parse_sub
itemsappend(_parse(source, state))
File "/usr/local/lib/python3.2/sre_parse.py", line 552, in _parse
raise error("bad character in group name")
sre_constants.error: bad character in group name
>>>
also:
(?P=name)
(?(name)yes|no)
\g<name>
----------
assignee: docs@python
components: Documentation, Regular Expressions
messages: 157266
nosy: docs@python, ezio.melotti, mrabarnett, py.user
priority: normal
severity: normal
status: open
title: In re's named group the name cannot contain unicode characters
type: behavior
versions: Python 3.2
_______________________________________
Python tracker <[email protected]>
<http://bugs.python.org/issue14462>
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