extract email addresses from some string

extradds.py

import re

def extract_email_addresses(adds):
    adds = ''.join(adds.split())
    adds = re.sub(r'(\"|\,)', ' ', adds)
    adds = re.split(r'\<(.*?\@.*?)\>', adds)
    #adds = re.findall(r"^[A-Za-z0-9\.\+_-]+@[A-Za-z0-9\._-]+\.[a-zA-Z]*$", ''.join(adds))
    adds = [a for a in adds if '@' in a]
    return adds

if __name__ == '__main__':

    adds = """
    """

    adds = extract_email_addresses(adds)

    print '\n'.join(sorted(adds))