password_checker.py

# In this exercise you will write a function that determines whether or not a password is good. We will define
# a good password to be a one that is at least 8 characters long and contains at least one uppercase letter,
# at least one lowercase letter, and at least one number. Your function should return true if the password 
# passed to it as its only parameter is good. Otherwise it should return false. Include a main program that
# reads a password from the user and reports whether or not it is good.

-

def checkPassword(password):
    has_upper = False
    has_lower = False
    has_num = False

    for ch in password:
        if ch >= 'A' and ch <= 'Z':
            has_upper = True
        elif ch >= 'a' and ch <= 'z':
            has_lower = True
        elif ch >= '0' and ch <= '9':
            has_num = True

    if len(password) >= 8 and has_upper and has_lower and has_num:
        return True
    return False

def main():
    p = input("Enter ya password: " )
    if checkPassword(p):
        print("Password is good")
    else:
        print("Password is bad")

if __name__ == "__main__":
    main()