Validation of a Password - Python

Question

So I have to create code that validate whether a password:

• Is at least 8 characters long
• Contains at least 1 number
• Contains at least 1

Answer 1

You are checking isdigit and isupper methods on the entire password string object not on each character of the string. The following is a function which checks if the password meets your specific requirements. It does not use any regex stuff. It also prints all the defects of the entered password.

#!/usr/bin/python3
def passwd_check(passwd):
    """Check if the password is valid.

    This function checks the following conditions
    if its length is greater than 6 and less than 8
    if it has at least one uppercase letter
    if it has at least one lowercase letter
    if it has at least one numeral
    if it has any of the required special symbols
    """
    SpecialSym=['$','@','#']
    return_val=True
    if len(passwd) < 6:
        print('the length of password should be at least 6 char long')
        return_val=False
    if len(passwd) > 8:
        print('the length of password should be not be greater than 8')
        return_val=False
    if not any(char.isdigit() for char in passwd):
        print('the password should have at least one numeral')
        return_val=False
    if not any(char.isupper() for char in passwd):
        print('the password should have at least one uppercase letter')
        return_val=False
    if not any(char.islower() for char in passwd):
        print('the password should have at least one lowercase letter')
        return_val=False
    if not any(char in SpecialSym for char in passwd):
        print('the password should have at least one of the symbols $@#')
        return_val=False
    if return_val:
        print('Ok')
    return return_val

print(passwd_check.__doc__)
passwd = input('enter the password : ')
print(passwd_check(passwd))