程序循環如果第二次遇到強密碼

Question

我有一個奇怪的問題，我不知道爲什麼會發生這種情況。我覺得很難解釋，但在這裏。我的程序工作正常，檢查長度，甚至力量。我的問題是，如果輸入以任何方式第一次失敗，然後重新輸入，並且是正確的長度和強度，它將重新要求密碼輸入。我想這是因爲最後一個像passwordbegin()，但如果我刪除它，程序顯然不會運行。任何人都可以給我一個提示或向我解釋爲什麼會發生這種情況？提前致謝！

def passwordbegin():  
     Upper = 0 
     Lower = 0 
     Number = 0 
     pass_check = True 
     while pass_check is True: 
      passw = raw_input("Please enter your password. It must be between 6 and 12 characters long and contain atleast capital letter, lowercase letter and number.") 

      if len(passw) < 6: 
       print("Your password is too short, it must be at least 6 characters long") 
      elif len(passw) > 12: 
       print("Your password is too long, it must be no more than 12 characters long") 
      else: 
       print("Your password is the correct length.") 
       pass_check = False 

      if pass_check is False: 
       for char in passw: 
        if char.isupper(): 
         Upper =+ 1 
        if char.islower(): 
         Lower =+ 1 
        if char.isdigit(): 
         Number =+ 1 
      Password_Strength = Number + Lower + Upper   
      if Password_Strength == 1: 
       print("Your password is weak, trying adding Numbers or Upper and Lowercase Letters") 
       raw_input("Press enter to restart the program") 
       while True: 
        passwordbegin() 
      if Password_Strength == 2: 
       print("Your password is medium strength, try adding Upper or Lowercase Letters and Numbers") 
       raw_input("Press enter to restart the program") 
       while True: 
        passwordbegin() 
      elif Password_Strength == 3: 
       print("Your password is strong and secure, thank you for entering!") 
    passwordbegin() 

Answer 1

不使用while pass_check is True:它不會做你認爲它的做法。

您應該使用while pass_check == True甚至更​​好`而pass_check：

的主要問題是，你再打電話給你的函數，而不是僅僅讓它循環。

呼籲passwordbegin()代替 - 使用continue（回到循環的開始），而且你不需要繼續while True:循環。