It shows understanding that words are made up of letters and that they can be counted Since tokens are atomic, which I didn't realize earlier, then maybe it's

It shows understanding that words are made up of letters and that they can be counted Since tokens are atomic, which I didn't realize earlier, then maybe it's still intelligent if it can realize it can extract the result by writing len([b for b in word if b == my_letter]) and decide on its own to return that value.