Python中的密码检查

Question

我有我的代码，我几乎完成了它只是如果它有一个符号我必须让程序说无效密码。 . . .

password = input("Enter password to test: ")

caps = sum(1 for c in password if c.isupper())
lower = sum(1 for c in password if c.islower())
nums = sum(1 for c in password if c.isnumeric())

r = [caps, lower, nums]

if len(password) < 8: 
    if caps >= 1:
        if lower >= 1:
            if nums >= 1:
                print("Valid Passeord")
            elif nums < 1:
                print("Invalid password")
        elif lower < 1:
            print("Invalid password")
    elif caps < 1:
        print("Invalid password")

如果密码无效，我将如何让它重新运行？

password = input("Enter password to test: ")

caps = sum(1 for c in password if c.isupper())
lower = sum(1 for c in password if c.islower())
nums = sum(1 for c in password if c.isnumeric())

r = [caps, lower, nums]

if not password.isalnum(): # use .isalpha() if you don't want digits in your password
    print("Invalid password")
    if len(password) < 8: 
        if caps >= 1:
            if lower >= 1:
                if nums >= 1:
                    print("Valid password")
                elif nums < 1:
                    print("Invalid password")
            elif lower < 1:
                print("Invalid password")
        elif caps < 1:
            print("Invalid password")

Answer 1

通过符号，我假设您的意思是除了字母和数字之外的任何东西？

# Initialize our valid flag
valid = False

while not valid:
    # Grab password and count everything as your original code
    password = input("Please enter password: ")
    caps = sum(1 for c in password if c.isupper())
    lower = sum(1 for c in password if c.islower())
    nums = sum(1 for c in password if c.isnumeric())

    # If password is not alphanumeric (contains symbols) or shorter than 8 characters, it's not valid
    if not password.isalnum() or len(password) < 8:
        valid = False

    # Otherwise, the password is only valid if everything occurs at least once
    else:
        valid = all(x >= 1 for x in (caps, lower, nums))

    # Check if your password is valid, and if it is, print valid and break out of the loop
    if valid:
        print("Valid Password")
        break
    # Otherwise, print invalid and the loop goes on
    else:
        print("Invalid Password")