def testFProb(self):
c = Classifier(getwords)
c.incc("Good")
c.incf("hello", "Good")
c.incc("Good")
c.incf("world", "Good")
c.incc("Good")
c.incf("world", "Good")
self.assertEqual(c.fprob("world", "Good"), 2.0/3.0)
