main.py

from dialogue_menus import *
from rooms import *

courtyard = Room(
    'This is a courtyard',
    {'North':'Entrance'},
    ['item1', 'item2'],
    ['monster1', 'monster2']
)

entrance = Room(
    'This is the entrance',
    {'North':'Corridor', 'South':'Courtyard'},
    ['item1', 'item2'],
    ['monster1', 'monster2']
)

corridor = Room(
    'This is corridor',
    {'South':'Entrance'},
    ['item1', 'item2'],
    ['monster1', 'monster2']
)

all_rooms = {
    'Entrance': entrance,
    'Corridor': corridor,
    'Courtyard': courtyard
}

def play():
    current_room = all_rooms['Courtyard']
    game_running = True
    while game_running:
        direction = current_room.interact()
        current_room = all_rooms[direction]

if __name__ == "__main__":
    code = play()
    sys.exit(code)

room.py

class Room:
    def __init__(self, description, directions, items, monsters):
        self.description = description
        self.directions = directions
        self.items = items
        self.monsters = monsters

    def __repr__(self):
        return "{}\n{}".format(self.description, self.directions)

    def interact(self):

        direction_items = list(self.directions.items())
        for index, (key, value) in enumerate(direction_items, 1):
            print(index, key)

        direction = int(input('Select a direction to go.\n>>>'))

        for index, (key, value) in enumerate(direction_items, 1):
            if index == direction:
                return value

        #assert 1 <= new_direction <= len(direction_items)
        # return direction_items[new_direction - 1][1]  # -1 since we enumerate from 1