def sense(self):
self.current_situation = bitstrings.BitString([<EOL>random.randrange(<NUM_LIT:2>)<EOL>for _ in range(self.address_size + (<NUM_LIT:1> << self.address_size))<EOL>])<EOL>return self.current_situation<EOL>
Return a situation, encoded as a bit string, which represents
        the observable state of the environment.

        Usage:
            situation = scenario.sense()
            assert isinstance(situation, BitString)

        Arguments: None
        Return:
            The current situation.