Question

Given that s has been defined, and that the_set that refers to a set, write an expression that whose value is True if and only if the value to which s refers is in the_set.

Answer 1

If the value to which s refers is in the set the_set, the following expression will evaluate to True:

s in the_set

This expression uses the in keyword to check if the value of s is contained in the set the_set. If the value of s is in the set, the expression will evaluate to True, and if the value is not in the set, the expression will evaluate to False.