def is_valid_email(addr):
    Email = re.match(r'[\d\w\.]+@[\d\w]*\.[\w]*', addr)
    return Email

def name_of_email(addr):
    Email = re.match(r'[<]?([\d\w\s]+)[>]?([\s]*[\w]*)@[\d\w]*\.[\w]*', addr)
    return Email.group(1) if len(Email.group(1))!=0 else Email.group(2)