python - 如果不在列表中
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python - if not in list
提问by Boosted_d16
I have two lists:
我有两个清单：
mylist = ['total','age','gender','region','sex']
checklist = ['total','civic']
I have to work with some code I have inherited which looks like this:
我必须使用我继承的一些代码，如下所示：
for item in mylist:
if item in checklist:
do something:
How can I work with the code above to tell me that 'civic' is not in mylist?.
我如何使用上面的代码告诉我“civic”不在 mylist 中？
This would've been the ideal way to do it but I cant use it, don't ask me why.
这本来是理想的方法，但我不能使用它，别问我为什么。
for item in checklist:
if item not in mylist:
print item
Outcome:
结果：
civic
采纳答案by Santosh Ghimire
How about this?
这个怎么样？
for item in mylist:
if item in checklist:
pass
else:
# do something
print item
回答by Will
Your code should work, but you can also try:
您的代码应该可以工作，但您也可以尝试：
if not item in mylist :
回答by Jose Manuel
You better do this syntax
你最好做这个语法
if not (item in mylist):
Code inside the if
回答by Yury Wallet
if I got it right, you can try
如果我做对了，你可以试试
for item in [x for x in checklist if x not in mylist]:
print (item)
