Python列表帮助，列表中没有重复项

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)

此代码正在打印...

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

我需要发生的事情：

• 一旦打印，NextCheck应该没有重复项。
• NextCheck应该在CheckList中包含所有内容，当然没有重复
• 完成while(CheckList)执行后，NextCheck中的所有内容都应位于AlreadyChecked中

不幸的是，如打印语句所示，我在NextCheck中得到重复。

有什么帮助吗？ ：/

Answer 1

将您的列表转换为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

您错过了一些缩进。 尝试粘贴此内容，看看问题是否已解决。

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)