re_email_verbose.py

#!/usr/bin/env python


import re

address = re.compile(
    '''
    [\w\d.+-]+          # username
    @
    ([\w\d.]+\.)+       # domain name prefix
    (com|org|edu)       # TODO: support more top-level domains
    ''',
    re.UNICODE | re.VERBOSE)

candidates = [
    u'[email protected]',
    u'[email protected]',
    u'[email protected]',
    u'[email protected]',
]

for candidate in candidates:
    match = address.search(candidate)
    print '%-30s %s' % (candidate, 'Matches' if match else 'No match')