def check_email(email):
    regex = '^[a-z0-9]+[\\._]?[a-z0-9]+[@]\\w+[.]\\w{2,3}$'
    if re.search(regex, email):
        return True
    else:
        return False
def check_email(email):
    regex = '^[a-z0-9]+[\\._]?[a-z0-9]+[@]\\w+[.]\\w{2,3}$'
    if re.search(regex, email):
        return True
    else:
        return False