# 8 Char long atleast. # contains letters, numbers, and symbols ''' ^: Start of the string. (?=.*[a-z]): At least one lowercase letter. (?=.*[A-Z]): At least one uppercase letter. (?=.*\d): At least one digit. (?=.*[@$!%*?&]): At least one special character from the set @$!%*?&. [A-Za-z\d@$!%*?&]{8,}: Matches any combination of the allowed characters, with a minimum length of 8. $: End of the string. This pattern ensures the password: Contains at least one lowercase letter. Contains at least one uppercase letter. Contains at least one digit. Contains at least one special character. Is at least 8 characters long. ''' import re pattern = re.compile(r"^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$") password = input("Enter a password:") print(pattern.search(password))