Python: How can I find all files with a particular extension?

Question

I am trying to find all the .c files in a directory using Python.

I wrote this, but it is just returning me all files - not just .c files.

Answer 1

import os, re
cfile = re.compile("^.*?\.c$")
results = []

for name in os.listdir(directory):
    if cfile.match(name):
        results.append(name)