direction = ['north', 'south', 'east', 'west', 'down', 'up', 'left', 'right', 'back']
verbs = ['go', 'stop', 'kill', 'eat']
stop = ['the', 'in', 'of', 'from', 'at', 'it']
nouns = ['door', 'bear', 'princess', 'cabinet']
numbers = [i for i in range(10)]
class lexicon(object):
def scan(self, sentence):
self.sentence = sentence
self.words = sentence.split()
for word in self.words:
if word is direction:
word = ('direction','%s' % word)
return word
http://learnpythonthehardway.org/book/ex48.html is what I am working on, I don't know why my program doesn't pass the test. When I run nosetests I get this error.
ERROR: tests.ex48_tests.test_directions
----------------------------------------------------------------------
Traceback (most recent call last):
File "/Users/tplaw/Public/projects/installs/venv/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
self.test(*self.arg)
File "/Users/tplaw/Public/projects/ex48/tests/ex48_tests.py", line 6, in test_directions
assert_equal(lexicon.scan("north"), [('direction', 'north')])
TypeError: unbound method scan() must be called with lexicon instance as first argument (got str instance instead)
----------------------------------------------------------------------
Ran 1 test in 0.005s
FAILED (errors=1)
and I only put the first aprt of the test in my tests directory. It is this:
from nose.tools import *
from ex48 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')])
lexicon.scan
is an instance method, not a class or static method. You have to construct a lexicon, then call scan on that.
lex = lexicon() # This will create an instance of the lexicon class
lex.scan() # This will invoke the instance method of the instantiated class