Bugs item #1202493, was opened at 2005-05-15 16:59
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Category: Regular Expressions
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Submitted By: Skip Montanaro (montanaro)
Assigned to: Gustavo Niemeyer (niemeyer)
Summary: RE parser too loose with {m,n} construct
Initial Comment:
This seems wrong to me:
>>> re.match("(UNIX{})", "UNIX{}").groups()
('UNIX',)
With no numbers or commas, "{}" should not be considered
special in the pattern. The docs identify three numeric
repetition possibilities: {m}, {m,} and {m,n}. There's no
description of {} meaning anything. Either the docs should
say {} implies {1,1}, {} should have no special meaning, or
an exception should be raised during compilation of the
regular expression.
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