Regular Expressions - Python vs Perl

[codecraig]

Hi,
  I am interested in regular expressions and how Perl and Python
compare.  Particulary, I am interested in performance (i.e. speed),
memory usage, flexibility, completeness (i.e. supports simple and
complex regex operations...basically is RegEx a strong module/library
in Python?)

  Anyone have any information on this?  Any numbers, benchmarks?

Thanks so much.  I know this is a python user group...but try to be has
un-biased as you can.