Problems with re

[Berthold Höllmann]

I have a regular expression wich, im most cases does what I want it to
do. But at least on one string it get's into an endless loop (OK I din't
wait forever). See the attaced example:

Python 1.5.2 (#2, Apr 22 1999, 14:34:42)  [GCC egcs-2.91.66 19990314
(egcs-1.1.2  on linux2
Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
>>> import re
>>> RE = re.escape
>>> CP = r'\CallPython'
>>> loopR = re.compile(
...     "(?:" + RE(CP) + r'(\[.*\])?{(?P<CodeC>(?:' + '""".*?"""|".*?"'
+ "|'''.*?'''|'.*?'|" +
...     '{.*?}+?|[^{]+?)+?))}',
...     re.MULTILINE|re.DOTALL)
>>> 
>>> LL = loopR.match("\CallPython{LaTeXPy.PyLaTeX(dir(math))}")
>>> LL = loopR.match("\CallPython{LaTeXPy.PyLaTeX({1:1,2:2,3:3}")
>>> LL = loopR.match("\CallPython{LaTeXPy.PyLaTeX(dir(math)); LaTeXPy.PyLaTeX({1:1,2:2,3:3}")

I try to parse a LaTeX file for the included "\CallPython" statements to
extract python commands from this statement.

Do you have any idea?

Thanks

Berthold
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