Good Enough(TM) email address finder

email_finder.py

import re

pattern = re.compile(
    r'(mailto:)?(?P<email>[^(\s|<|\[))]*@[^\s]*\.[^(\s|>|;|,|\])]*)'
)

test_data = '''
    This is [email protected] string with some Email Addresses 
    <[email protected]> in it. There are also
    some mailto:[email protected] addresses in here too.
'''

for match in pattern.finditer(test_data):
    print match.groupdict().get('email')

# would print:
# [email protected]
# [email protected]
# [email protected]