[Tutor] Simple way to compare Two lists

[Jaggo]

Hello!

I desperately need a simple way to compare whether any item of SmallList is in BigList.

My current way,

def IsAPartOfList(SmallList,BigList)
for item in SmallList:
    if item in BigList:
        return True
return False

Takes up waay too much time to process.
Can anyone think of any better way?

Usually, SmallList is generated using range(Long, Long+ ~300)
BigList is usually of a few hundreds of long numbers.
The long numbers themselves represent date in seconds-since-the-epoch time. (E.G: time.time() is now in seconds-since-the-epoch,
1186739653.4679999
at the time of writing.)

Thank you for your help,
Omer Tabach.
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