import re

class PasswordValidation:

    @staticmethod
    def strong_password(strong_password):
        has_digit = True if re.search('\d', strong_password) else False
        has_up = True if re.search("[A-Z]", strong_password) else False
        has_low = True if re.search("[a-z]", strong_password) else False
        test_len = len(strong_password) >= 12
        test_123 = "123" not in strong_password
        result = has_digit and has_up and has_low and test_len and test_123

        return result

print(PasswordValidation.strong_password("Strong3Password")) #Strong password
print(PasswordValidation.strong_password("strong1password")) #Weak password