e4cdb5daed
Write a function to count the frequency of words in a sentence. Ignore casing for words; ignore punctuation.
79 lines
2.1 KiB
Python
79 lines
2.1 KiB
Python
import unittest
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import re
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from collections import Counter
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class WordCloudData(object):
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def __init__(self, x):
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x = x.replace('...', ' ').replace(' - ', ' ')
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x = ''.join(c for c in x if c not in ',.!?;:')
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self.words_to_counts = dict(
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Counter(x.lower() for x in re.split(r'\s+', x)))
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# Tests
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class Test(unittest.TestCase):
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def test_simple_sentence(self):
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input = 'I like cake'
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word_cloud = WordCloudData(input)
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actual = word_cloud.words_to_counts
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expected = {'i': 1, 'like': 1, 'cake': 1}
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self.assertEqual(actual, expected)
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def test_longer_sentence(self):
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input = 'Chocolate cake for dinner and pound cake for dessert'
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word_cloud = WordCloudData(input)
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actual = word_cloud.words_to_counts
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expected = {
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'and': 1,
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'pound': 1,
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'for': 2,
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'dessert': 1,
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'chocolate': 1,
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'dinner': 1,
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'cake': 2,
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}
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self.assertEqual(actual, expected)
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def test_punctuation(self):
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input = 'Strawberry short cake? Yum!'
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word_cloud = WordCloudData(input)
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actual = word_cloud.words_to_counts
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expected = {'cake': 1, 'strawberry': 1, 'short': 1, 'yum': 1}
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self.assertEqual(actual, expected)
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def test_hyphenated_words(self):
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input = 'Dessert - mille-feuille cake'
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word_cloud = WordCloudData(input)
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actual = word_cloud.words_to_counts
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expected = {'cake': 1, 'dessert': 1, 'mille-feuille': 1}
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self.assertEqual(actual, expected)
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def test_ellipses_between_words(self):
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input = 'Mmm...mmm...decisions...decisions'
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word_cloud = WordCloudData(input)
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actual = word_cloud.words_to_counts
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expected = {'mmm': 2, 'decisions': 2}
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self.assertEqual(actual, expected)
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def test_apostrophes(self):
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input = "Allie's Bakery: Sasha's Cakes"
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word_cloud = WordCloudData(input)
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actual = word_cloud.words_to_counts
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expected = {"bakery": 1, "cakes": 1, "allie's": 1, "sasha's": 1}
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self.assertEqual(actual, expected)
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unittest.main(verbosity=2)
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