我正在以艰难的方式学习 Python 的第 47 项练习,我收到一条错误消息:
Traceback (most recent call last):
File "c:\python26\lib\site-packages\nose-1.2.0-py2.6.egg\nose
97, in runTest
self.test(*self.arg)
File "E:\project\ex47\tests\ex47_tests.py", line 27, in test_
assert_equal(start.go('down').go('up'),start)
AssertionError: None != <ex47.game.Room object at 0x0191BFD0>
#while executing the below code:
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})
assert_equal(start.go('west'),west)
assert_equal(start.go('west').go('east'),start)
assert_equal(start.go('down').go('up'),start)
我在谷歌上搜索,发现它是在我们调试时引发的,但也可能是我的 game.py 文件位于 bin 文件夹中的原因
整体结构是这样的
项目/ex47/bins/
/docs
/tests/ex47_tests.py,_ _ init_ _ .py
/ex47/game.py
谁能帮助我并告诉我为什么会出现此错误?
这是 game.py 文件。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)