用戶名/密碼檢查器出錯

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我的任務是設計一個Python程序，允許三個用戶之一（Alice，Bob和Charles）輸入所需的密碼。我的程序將確定它是否是有效的密碼。另外，我的程序還應該檢查過去是否該用戶已經使用過該密碼，並且如果他們之前使用過該密碼，則會返回一條錯誤消息。用戶名/密碼檢查器出錯

我已成功編寫用戶名和密碼條件，但無法在用戶有或尚未輸入密碼時獲取代碼以返回無效/有效的消息。

user = input("Which user is this? ") 
if user == "Alice" or user == "Bob" or user == "Charles": 
    print("Welcome, ",user,"!",sep="") 
else: 
    print("I don't recognize that username. Please try again.") 

def checkPassword(pw): 
    errorMessage = '' 

if ((len(pw) > 20)): 
    errorMessage += "--Password is too long. 20 characters is the max.\n" 
elif (len(pw) < 12): 
    errorMessage += "--Password is too short. 12 characters is the min.\n" 

if pw.isalpha(): 
    errorMessage += "--Password needs at least one digit.\n" 

if pw.isdigit(): 
    errorMessage += "--Password needs at least one letter.\n" 

if pw.isupper(): 
    errorMessage += "--Password needs an uppercase character.\n" 

if pw.islower(): 
    errorMessage += "--Password needs a lowercase character.\n" 

if pw.isalnum(): 
    errorMessage += "--Password needs a punctuation character.\n" 

return errorMessage 

passwordCandidate = input("Please input a valid password: ") 
errors = '' 

errors = checkPassword(passwordCandidate) 

if errors is not '': 
    print("Your password is invalid:\n", errors, sep='') 

elif user == "Alice" and passwordCandidate == "IamAlice123!" and 
passwordCandidate == "Alicerules99!" and passwordCandidate == 
"ILo^eBob2017" and passwordCandidate == "pa%%word2017": 
    print("--It appears that you have used this password before. Please 
choose another one.") 

elif user == "Bob" and passwordCandidate == "MyNameIs808,FearMe" and 
passwordCandidate == "[email protected]@@" and passwordCandidate == 
"iamthe#1bestatLIFE" and passwordCandidate == "2Busy2BeTiedDown!":  
    print("--It appears that you have used this password before. Please 
choose another one.") 

elif user == "Charles" and passwordCandidate == "Alice5uxAlice5ux!" and 
passwordCandidate == "GoAwayYuckyAlice" and passwordCandidate == 
"!secretlyLuvBob99" and passwordCandidate == "[email protected]~~~": 
    print("--It appears that you have used this password before. Please 
choose another one.") 

else: 
    print("Your password is valid.")

Photo of code

來源

2017-10-07 Blaine Williamson

您需要將and操作更改爲or運營商已經使用過的密碼，並附在括號。

elif user == "Alice" and (passwordCandidate == "IamAlice123!" or passwordCandidate == "Alicerules99!" or passwordCandidate == "ILo^eBob2017" or passwordCandidate == "pa%%word2017"): 
    print("--It appears that you have used this password before. Please choose another one.")

來源

2017-10-07 21:59:53 0TTT0

用戶名/密碼檢查器出錯

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