Python中的雙密碼身份驗證

Question

我在學校里學到了一些python，我一直在嘗試用密碼認證創建一個簡單的登錄系統。

我希望它工作的方式：獲取用戶名和密碼，請求密碼進行身份驗證，如果密碼不正確，請再次詢問，直到找到正確的密碼

到目前為止這是我的代碼：

#online auth

email = input('What is your email address?')
password = input('Enter a password')
passcheck = input('Please re-enter password for confimation')

while passcheck != password:
    input('Please re-enter password for confirmation')

else: print("A confirmation code has been emailed to you")

當我運行該程序時，它會正確地詢問電子郵件和用戶名，然后我收到確認問題。 如果我輸入的密碼與我在第一個地方輸入的密碼相同，則進入else語句。 如果我輸入了錯誤的一個，它就會結束一個永不停止的重新輸入密碼的循環，即使我輸入了正確的密碼。

我知道while循環創建了一個無限循環，但我找不到任何好方法來結束它。

Answer 1

你可以做點什么

email = input('What is your email address?')
password_input = False
while not password_input or pass_check != password:
    password = input('Enter a password')
    pass_check = input('Please re-enter password for confimation')
    password_input = True
print("A confirmation code has been emailed to you")

Answer 2

剛剛在朋友的幫助下解決了：

#online auth

email = input('What is your email address?')
password = input('Enter a password')
passcheck = input('Please re-enter password for confimation')

while passcheck != password:
    passcheck = input('Please re-enter password for confirmation')
else: print("A confirmation code has been emailed to you")

Answer 3

結束循環的好方法是使用for或counter變量

for index in range(0,5):
    password = input('Enter a password')
    pass_check = input('Please re-enter password for confimation')
    if pass_check == password :
        print("A confirmation code has been emailed to you")
        index=65532
    else :
        print("The passwords do not match, try again.")

if index != 65532 :
    print("too many attempts, if you want to retry, please restart the program")

注意：65532不是特殊的，它只是超出范圍，所以你退出for。