笨方法学python Lesson 46 - 49
Exercises 46
代码
setup.py
try:
from setuptools import setup
except ImportError:
from distutils.core import setup
config = {
'description': 'My Project',
'author': 'Jer',
'url': 'URL to get it at.',
'download_url': 'Where to download it.',
'author_email': '[email protected]',
'version': '0.1',
'install_requires': ['nose'],
'packages': ['Jer'],
'scripts': [],
'name': 'projectname'
}
setup(**config)
test.py
from nose.tools import * import Jer def setup(): print "SETUP!" def teardown(): print "TEAR DOWN!" def test_basic(): print "I RAN!"
Notes
①本节主要是项目构建的基础知识
Exercise 47
game.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)
BLAH_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)
测试输出：
①nosetests测试，自动化测试
Exercise 48
我的"扫描器"/lexicon.py
class Lexicon(object):
def scan(self, stuff):
self.stuff = stuff
words = stuff.split()
sentence = []
for i in words:
try:
sentence.append(('number', int(i)))
except ValueError:
if i in ['north', 'south', 'east', 'west', 'down', 'up', 'left', 'right', 'back']:
sentence.append(('direction', i))
elif i in ['go', 'stop', 'kill', 'eat']:
sentence.append(('verb', i))
elif i in ['the', 'in', 'of', 'from', 'at', 'in']:
sentence.append(('stop', i))
elif i in ['door', 'bear', 'princess', 'cabinet']:
sentence.append(('noun', i))
else:
sentence.append(('error', i))
return sentence
lexicon = Lexicon()
测试代码 lexicon_tests.py
from nose.tools import *
from ex48.lexicon import lexicon
def test_directions():
assert_equal(lexicon.scan("north"), [('direction', 'north')])
result = lexicon.scan("north south east")
assert_equal(result, [('direction', 'north'),
('direction', 'south'),
('direction', 'east')])
def test_verbs():
assert_equal(lexicon.scan("go"), [('verb', 'go')])
result = lexicon.scan("go kill eat")
assert_equal(result, [('verb', 'go'),
('verb', 'kill'),
('verb', 'eat')])
def test_stops():
assert_equal(lexicon.scan("the"), [('stop', 'the')])
result = lexicon.scan("the in of")
assert_equal(result, [('stop', 'the'),
('stop', 'in'),
('stop', 'of')])
def test_nouns():
assert_equal(lexicon.scan("bear"), [('noun', 'bear')])
result = lexicon.scan("bear princess")
assert_equal(result, [('noun', 'bear'),
('noun', 'princess')])
def test_numbers():
assert_equal(lexicon.scan("1234"), [('number', 1234)])
result = lexicon.scan("3 91234")
assert_equal(result, [('number', 3),
('number', 91234)])
def test_errors():
assert_equal(lexicon.scan("ASDFASDFASDF"), [('error', 'ASDFASDFASDF')])
result = lexicon.scan("bear IAS princess")
assert_equal(result, [('noun', 'bear'),
('error', 'IAS'),
('noun', 'princess')])
输出
Notes:
①试了半天，一直提示
unbound method must be called with instance as first argument
这个错误，最后在lexicon.py中加了一个实例化语句，最终解决
②加分习题3，识别大小写用lower()全部转换成小写再判断即可
③加分习题4，另外一种方式就是try里对字符串进行操作，except里对数字进行操作。
try: i.lower() pass except SyntaxError: pass
Exercise 49