Extracts Python script from an interactive session source

enpy.py

import sys, re

def main(args):
    input = sys.stdin.read()
    # Mac and Windows line endings to *nix
    lines = input.replace('\r\n', '\r').replace('\r', '\n').split('\n')
    exp = re.compile(r'(?:(?:\>|\.){3})\s(.+)')
    print '\n'.join(
        [match.group(1) for match in [
            exp.search(line) for line in lines] if match])

if __name__ == '__main__':
    main(sys.argv[1:])