Python列表幫助，列表中沒有重復項

Question

CheckList = ['hello', 'hello1', 'hello2', 'hello3', 'hello4', 'hello5', 'hello', 'hello1']
AlreadyChecked = ['hello', 'hello1', 'hello2', 'hello3', 'hello4']
NextCheck = ['hello', 'hello1', 'hello2']


while(CheckList):
    ToCheck = CheckList.pop()
    while(ToCheck in AlreadyChecked and CheckList):
        ToCheck = CheckList.pop()
    AlreadyChecked.append(ToCheck)
    while(ToCheck in NextCheck and CheckList):
        ToCheck = CheckList.pop()
    NextCheck.insert(0, ToCheck)

print(NextCheck)

此代碼正在打印...

['hello', 'hello5', 'hello', 'hello1', 'hello2']

我需要發生的事情：

• 一旦打印，NextCheck應該沒有重復項。
• NextCheck應該在CheckList中包含所有內容，當然沒有重復
• 完成while(CheckList)執行后，NextCheck中的所有內容都應位於AlreadyChecked中

不幸的是，如打印語句所示，我在NextCheck中得到重復。

有什么幫助嗎？ ：/

Answer 1

將您的列表轉換為set()

lst = ["A", "B", "C", "C", "B"]
print(list(set(lst)))
>>> ["A", "B", "C"]

要更改列表，只需

lst = set(lst)

Answer 2

您錯過了一些縮進。 嘗試粘貼此內容，看看問題是否已解決。

CheckList = ['hello', 'hello1', 'hello2', 'hello3', 'hello4', 'hello5', 'hello', 'hello1']
AlreadyChecked = ['hello', 'hello1', 'hello2', 'hello3', 'hello4']
NextCheck = ['hello', 'hello1', 'hello2']


while(CheckList):
    ToCheck = CheckList.pop()
while(ToCheck in AlreadyChecked and CheckList):
    ToCheck = CheckList.pop()
AlreadyChecked.append(ToCheck)
while(ToCheck in NextCheck and CheckList):
    ToCheck = CheckList.pop()
    NextCheck.insert(0, ToCheck)
print(NextCheck)