[Python] Why is this saying that the object is not subscriptable (Python) [duplicate]

I'm trying to write a code that will detect if a list is a palindrome. Here is what I have so far-

##theSubList = raw_input("Input the list here")
def isPalindrome( theSubList ) :
return theSubList == theSubList[::-1]


Why does this tell me that the "int" object is not subscriptable. The only way I can get this to run is by putting the top line in (the commented out part) but I don't want to have to do that, everything should come from just the isPalindrome( theSubList ).

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