跳過如果和其他命令

print ("Welcome to my Quiz!") 
existing = input("Are you an existing user?: ") 
if existing.lower == "yes": 
    print("Enter your credidentials") 
username= input("Enter your Username: ") 
password= input("Enter your Password: ") 
file= open("data.txt", "r") 
found=False 
for line in file: 
    account = line.split(",") 
    if account[0] == username: 
     password= existing[1] 
     found=True 
file.close() 
if found==True: 
    print("Welcome Back", username ,) 
if found==False: 
    print("Account not found") 
else: 
    existing.lower == "no" 
    user= input("Enter your first name: ") 
    year= input("Enter the year you are in: ") 
    password= input("Enter your password: ") 
    username=user[:2]+year  
    writefile=open("data.txt","a") 
    writefile.write(username + "," + password + "\n") 
    writefile.close() 
    print("Your account has been created." "Your username is..", username , "..and your password is", password,)

我試圖做一個測驗，我希望它的工作原理是，如果他們的用戶有一個帳戶，它不會經歷一個新的帳戶的過程。現在，如果我登錄，它仍然要求我的名字等，完全跳過if和else命令。跳過如果和其他命令

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2017-10-28 Ak.

'existing.lower'應該是'existing.lower（）'，但除非你有一些嚴重的壓痕問題，這ISN」 t相關。 – chepner

也無關緊要，你永遠不會檢查輸入的密碼是* correct *密碼。 – chepner

您需要縮進從'username ='一直到'print（「Account not found」）的所有內容。因爲'else'語句是第一個'if'，所以在頂部 – abccd

試試這個：

print("Welcome to my Quiz!") 

existing = input("Are you an existing user?: ") 


if existing.lower() == "yes": 
    print("Enter your Credidentials") 

    username = input("Enter your Username: ") 
    password = input("Enter your Password: ") 

    with open("data.txt", "r") as raw_data: 
     my_data = raw_data.read() 

    re_data = my_data.split('\n') 

    check_box = username + "," + password 

    if check_box in re_data: 
     print("Welcome Back " + username) 

    else: 
     print("Account not found") 


else: 

    user = input("Enter your first name: ") 
    year = input("Enter the year you are in: ") 
    password = input("Enter your password: ") 
    username = user[:2]+year 

    save_box = username + "," + password + "\n" 

    with open("data.txt", "a") as raw_data: 
     raw_data.write(save_box) 

    print("Your account has been created." "Your username is.." + username + "..and your password is" + password) 


print("Goodbye, Have a Nice Day ...")

您username_password文件應該是：

jack,6354734346534 
edward,45645646754 
jeje,874574574587

來源

2017-10-28 14:56:49 DRPK

感謝您的幫助。當我登錄，雖然說，帳戶沒有找到x3然後說歡迎回來，用戶名，然後另一個'帳戶未找到' –

oohhhh yeahhhh我忘記了！我會更新它... – DRPK

@亞當：現在它可以... – DRPK

兩個問題是有

如果其他對準問題以及
調用低函數
讀線（未剝換行字符）

試試這個，並提供反饋

print ("Welcome to my Quiz!") 
existing = input("Are you an existing user?: ") 
if existing.lower()[0] == "y": 
    print("Enter your credidentials") 
    username= input("Enter your Username: ") 
    password= input("Enter your Password: ") 
    file= open("data.txt", "r") 
    found=False 
    for line in file: 
     account = line.strip().split(",") 
     if account[0] == username: 
      password= account[1] 
      found=True 
    file.close() 
    if found==True: 
     print("Welcome Back", username) 
    else: 
     print("Account not found") 
else: 
    #print("Account not found") 
    #existing.lower() == "no" 
    user= input("Enter your first name: ") 
    year= input("Enter the year you are in: ") 
    password= input("Enter your password: ") 
    username=user[:2]+year  
    writefile=open("data.txt","a") 
    writefile.write(username + "," + password + "\n") 
    writefile.close() 
    print("Your account has been created." "Your username is..", username , "..and your password is", password,)

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2017-10-28 14:52:05

跳過如果和其他命令

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