一个项目骨架 skeleton

projects/simplegame
projects/simplegame/bin
projects/simplegame/docs
projects/simplegame/ex47
projects/simplegame/ex47/init.py
projects/simplegame/ex47/game.py
projects/simplegame/setup.py
projects/simplegame/tests
projects/simplegame/tests/init.py
projects/simplegame/tests/ex47_tests.py

class Room(object) :

    def __init__(self, name, description) :
        self.name = name
        self.description = description
        self.paths = {}

    def go(self, direction) :
        return self.paths.get(direction, None)

    def add_paths(self, paths) :
        self.paths.update(paths)

ex47_tests.py

from nose.tools import *
from ex47.game import Room

def test_room() :
    gold = Room("GoldRoom", 
                """This room has gold in it you can grab. There's a
                door to the north. """)
    assert_equal(gold.name, "GoldRoom")
    assert_equal(gold.paths, {})

def test_room_paths() :
    center = Room("Center", "Test room in the center.")
    north = Room("North", "Test room in the north.")
    south = Room("South", "Test room in the south.")

    center.add_paths({'north': north, 'south': south})
    assert_equal(center.go('north'), north)
    assert_equal(center.go('south'), south)

def test_map() :
    start = Room("Start", "You can go west and down a hole.")
    west = Room("Trees", "There are trees here, you can go east.")
    down = Room("Dungeon", "It's dark down here, you can go up.")

    start.add_paths({'west': west, 'down': down})
    west.add_paths({'east': start})
    down.add_paths({'up': start})

    assert_equal(start.go('west'), west)
    assert_equal(start.go('west').go('east'), start)
    assert_equal(start.go('down').go('up'), start)