繼承人我的代碼片段。它不會說用戶不正確。每個問題的答案在列表中以相同的順序排列。在Python中遇到隨機數問題

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 questions = ["45 - 20","32 - 12","54 + 41"] 

     # Answer Bank 
     answers = ["25","20","95"] 


     while qleft != 0: 


      # Get random question 
      qnumber = randint(0,2) 
      currentquestion = questions[qnumber] 
      currentanswer = answers[qnumber] 

      # Question 
      userchoice = int(input("What does {} equal? ".format(currentquestion))) 

      # Check Answer 
      if userchoice != currentanswer: 
       print("Incorrect") 
       qleft -= 1 
      elif userchoice == currentanswer: 
       print("Correct") 
       qleft -= 1 

      else: 
       print("That's not a valid answer")

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2017-10-12 J Hammond

看起來像'integer！= string'對我來說經典的例子... – Shadow

用戶的答案，userchoice，是一個整數，但實際的答案，currentanswer是一個字符串。它會工作，如果你只是離開了輸入作爲一個字符串：

questions = ["45 - 20","32 - 12","54 + 41"] 

    # Answer Bank 
    answers = ["25","20","95"] 


    while qleft != 0: 


     # Get random question 
     qnumber = randint(0,2) 
     currentquestion = questions[qnumber] 
     currentanswer = answers[qnumber] 

     # Question 
     userchoice = input("What does {} equal? ".format(currentquestion)) 

     # Check Answer 
     if userchoice != currentanswer: 
      print("Incorrect") 
      qleft -= 1 
     elif userchoice == currentanswer: 
      print("Correct") 
      qleft -= 1 

     else: 
      print("That's not a valid answer")

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2017-10-12 22:09:34

當別人指出它的時候很明顯！ –

你有str的答案，這是從來沒有平等的比較的int輸入。

如果你想處理整數，改變

answers = ["25","20","95"]

到

answers = [25,20,95]

，它會工作。

或者，不要將input()的結果轉換爲int。

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2017-10-12 22:10:17 user6731765

這裏的區別是：

import random as r 

    questions = ["45 - 20","32 - 12","54 + 41"] 

    # Answer Bank 
    answers = [25,20,95] 

    qleft = 3 

    while qleft != 0: 


     # Get random question 
     qnumber = r.randint(0,2) 
     currentquestion = questions[qnumber] 
     currentanswer = answers[qnumber] 

     # Question 
     userchoice = int(input("What does {} equal? ".format(currentquestion))) 

     # Check Answer 
     if userchoice != currentanswer: 
      print("Incorrect") 
      qleft -= 1 
     elif userchoice == currentanswer: 
      print("Correct") 
      qleft -= 1 

     else: 
      print("That's not a valid answer")

通知，「25」 = 25

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2017-10-12 22:10:27

既然要轉換的用戶的回答爲int，正確的答案也東東爲int！否則，你將字符串與int進行比較，它永遠不會相等。

answers = [25, 20, 95]

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2017-10-12 22:16:04 gammazero

在Python中遇到隨機數問題

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