pattern in url_dispatch.txt maybe wrong

[James Zhu]

>>> import re
>>> a = r'^/articles/(?P\d{4})/$'
>>> re.compile( a )
Traceback (most recent call last):
  File "<input>", line 1, in ?
  File "C:\Python24\Lib\sre.py", line 180, in compile
    return _compile(pattern, flags)
  File "C:\Python24\Lib\sre.py", line 227, in _compile
    raise error, v # invalid expression
error: unknown specifier: ?P\d
>>> a = r'^/articles/(?P<year>\d{4})/$'
>>> re.compile( a )
<_sre.SRE_Pattern object at 0x01093350>

Should we add the group name in patterns?

[Adrian Holovaty]

Yes, indeed! Good catch. Fixed in [191].