Challenge

List xor

Define a function named list_xor. Your function should take three parameters: n, list1 and list2.

Your function must return whether n is exclusively in list1 or list2.

In other words, if n is in both lists or in none of the lists, return False. If n is in only one of the lists, return True.

For example:

list_xor(1, [1, 2, 3], [4, 5, 6]) == True
list_xor(1, [0, 2, 3], [1, 5, 6]) == True
list_xor(1, [1, 2, 3], [1, 5, 6]) == False
list_xor(1, [0, 0, 0], [4, 5, 6]) == False

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