recursive_glob.py

import os
import fnmatch

def recursive_glob(treeroot, pattern):
    results = []
    for base, dirs, files in os.walk(treeroot):
        goodfiles = fnmatch.filter(files, pattern)
    results.extend(os.path.join(base, f) for f in goodfiles)
    return results

print recursive_glob('c:/', '*.txt')