[Python] How to check if the n-th element exists in a Python list?

I have a list with unknown length. I want to check if the n-th element exists without receiving an error message.

e.g. for n = 4, if the list was

x = ['a', 'b', 'c']


with 3 elements, the check would return "false", and if the list was

x = ['a', 'b', 'c', 'd']


with 4 elements, the check would return "true".

How would I do that?

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