code: def from_tuple(self, t):
          
          if len(t) > 1:
              self.id = t[0]
              self.sitting = t[1]
          else:
              self.sitting = t[0]
              self.id = None
          return self
docs: Set this person from tuple
  
          :param t: Tuple representing a person (sitting[, id])
          :type t: (bool) | (bool, None | str | unicode | int)
          :rtype: Person