Hello all,

First off, I'm posting this because when I was looking for a solution to the problem below, I could not find one on stackoverflow. So, I'm hoping to add a little bit to the knowledge base here.

I need to process some files in a directory and need the files to be sorted numerically. I found some examples on sorting--specifically with using the lamba pattern--at wiki.python.org, and I put this together:

#!env/python
import re

tiffFiles = """ayurveda_1.tif
ayurveda_11.tif
ayurveda_13.tif
ayurveda_2.tif
ayurveda_20.tif
ayurveda_22.tif""".split('\n')

numPattern = re.compile('_(\d{1,2})\.', re.IGNORECASE)

tiffFiles.sort(cmp, key=lambda tFile:
                   int(numPattern.search(tFile).group(1)))

print tiffFiles

I'm still rather new to Python and would like to ask the community if there are any improvements that can be made to this: shortening the code up (removing lambda), performance, style/readability?

Thank you, Zachary