如何使用 while 循環將 N 個用戶輸入添加到列表中？

Question

question = ""
while question not in questionList:
    question = questionList.append(input("Whats your question? "))
    if question in questionList:
        break
    elif question == "none":
        break

我想要做的是讓用戶反復問一個問題，直到輸入“無”或直到他們重復自己。 他們輸入的東西應該進入“questionList”列表唯一的問題是我的代碼無論如何都不會破壞。 我怎樣才能讓while循環中斷？

Answer 1

主要問題是questionList.append()總是返回None而你的代碼似乎假設它返回它的參數。 改寫如下：

question = input("Whats your question? ")
questionList.append(question)

Answer 2

question = "_"
questionList=[]
while question != "":
    question = str(input("Whats your question? "))
    if question == None or question in questionList:
        break
    questionList.append(question) # returns None