def assign_to_room(person, room=None):
"""Assign a person to a room.
<room_name> is optional.
"""
# find a person by name
if type(person) is str:
person = Amity.find_person(person)
# find a room by name if specified
if type(room) is str:
room = Amity.find_room(room)
# is the room an office?
if isinstance(room, Office):
if not person.has_office():
Manager.assign_to_office(person, room)
# is the room a living space?
if isinstance(room, LivingSpace):
if person.can_have_living_space() and \
not person.has_living_space():
Manager.assign_to_living_space(person, room)
elif room is None:
if not person.has_office():
Manager.assign_to_office(person)
if isinstance(person, Fellow) and person.can_have_living_space():
if not person.has_living_space():
Manager.assign_to_living_space(person)
