RegEx Nightmare 😱

1import re
2def check_email(email):
3    pattern = r"(^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$)"
4    if re.match(pattern, email):
5        print(f"'{email}' is valid.")
6    else:
7        print(f"'{email}' is invalid.")
8 
9check_email("user.name@example.com")