def sub_location(self, nbr):
assert nbr > -<NUM_LIT:1>, "<STR_LIT>"<EOL>assert nbr < self.nbr_of_sub_locations() - <NUM_LIT:1>, "<STR_LIT>" % self.nbr_of_sub_locations() - <NUM_LIT:1><EOL>return self._locations_list[nbr]<EOL>
Return a given sub location, 0-based.

Args:
    nbr:

Returns: