如何將變量傳遞給 function 而無需繼續使用在 Python 中調用的原始 function？

Question

當談到 Python 時，我不是專家，我正在嘗試將幾個功能放在一起來執行以下操作：

• 詢問名稱，如果存在，詢問密碼，如果正確，提供訪問權限
• 如果名稱不正確，請要求用戶更改或注冊
• 注冊的時候想調用另外一個function來檢查密碼的有效性（Password Checker）然后跳回userRegistration的rest ZC1C425268E68385D14AB5074C17A9，如果密碼足夠強的話。

但是，即使我提供的新密碼太短或太長，它也會跳回原來的 function 並執行代碼的 rest。 我知道代碼尚未完成，但我知道我沒有正確執行。 請問有什么建議嗎？ 此外，當涉及到提供密碼/用戶名的最終失敗嘗試並且我希望應用程序說“嘗試次數過多”時，最好放在哪里？

代碼的 rest 在理想條件下幾乎可以正常工作（散列、OTP、SQL，...）

到目前為止，這是我的代碼：

import sqlite3
import hashlib
import pyotp
import sys
from password_validator import PasswordValidator


connection = sqlite3.connect("localDB.db")
cursor = connection.cursor()
cursor.execute("DROP TABLE passwords")
cursor.execute("CREATE TABLE passwords (name, password)")
cursor.execute("INSERT INTO passwords VALUES ('Tomas','password123')")


def OTP():
    totp = pyotp.TOTP('base32secret3232')
    print("This is your one-time passcode: ")
    print(totp.now())
    userOTP = input("Please provided your passcode: ")
    otpass = totp.verify(userOTP)
    if otpass == True:
        print("You are now logged in")
        sys.exit()
    else:
        print("Access Forbidden")
        sys.exit()



def correctUsername(username):
    print("Account found, please provide your password: ")
    retry = 0
    while retry<3:
        userPassword = input()
        cursor.execute('SELECT password FROM passwords WHERE name=?', [username])
        match = cursor.fetchone()
        dbPassword = match[0]
        # print(dbPassword)
        hashedCorrectPassword = hashlib.sha256(str(dbPassword).encode('utf-8')).hexdigest()
        hashedInputPassword = hashlib.sha256(str(userPassword).encode('utf-8')).hexdigest()
        #print(hashedCorrectPassword)
        #print(hashedInputPassword)

        try:
            if hashedInputPassword == hashedCorrectPassword:
                print("That's correct, welcome.")
                OTP()

            else:
                print("That's incorrect, please try again.")
                retry += 1
                continue


        except:
            break
        print("Maximum tries exceeded")

def passwordValidator(registrationPassword):
    schema = PasswordValidator()
    schema.min(8)
    schema.max(15)
    schema.has().uppercase()
    schema.has().lowercase()

    validatePassword = schema.validate(registrationPassword)
    if validatePassword == True:


        print("Good password")

    else:

        print("Try again - not strong enough")





def userRegistration():
    compliance = bool
    print("Register here")
    registrationName = input("What is your name?")
    print("Your name is ", registrationName)
    registrationPassword = input("What is your password?")
    passwordValidator(registrationPassword)
    cursor.execute("INSERT INTO passwords VALUES (?,?)",(registrationName, registrationPassword))
    print("User successfully registered, please login with your new details: ")
    passwordDatabase()



def passwordDatabase():
    print("Please enter your username: ")

    retry = 0
    while retry<3:
        try:
            username = input()
            if username == "YES":
                userRegistration()
            else:

                cursor.execute('SELECT name FROM passwords WHERE name=?', [username])
                match = cursor.fetchone()
                if match is None:
                    print("No account found, please try again, or type YES for registration")
                    retry += 1
                    continue


                else:
                  correctUsername(username)
                  break

        except:
            break
        print("Maximum tries exceeded.")

Answer 1

一種選擇是讓passwordValidator既要求又返回密碼。 不過，這里的關鍵步驟是將這個詢問過程放在一個循環中。 像這樣的東西

def passwordValidator():
    while True:
        valid_password = True
        password = input("What is your password?")
        #
        #
        # validation steps here, if it is invalid, set valid_password to False
        if valid_password:
            return password

如果輸入了無效密碼， while循環將繼續，並再次提示用戶輸入密碼。

然后你可以做

def userRegistration():
    compliance = bool
    print("Register here")
    registrationName = input("What is your name?")
    print("Your name is ", registrationName)
    registrationPassword = passwordValidator(registrationPassword)
    cursor.execute("INSERT INTO passwords VALUES (?,?)",(registrationName, registrationPassword))
    print("User successfully registered, please login with your new details: ")
    passwordDatabase()