twelve days and word count exercises

python/word-count/.exercism/metadata.json

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+{"track":"python","exercise":"word-count","id":"b8740c62231043358e4bdaa590764dbe","url":"https://exercism.io/my/solutions/b8740c62231043358e4bdaa590764dbe","handle":"Xevion","is_requester":true,"auto_approve":false}

python/word-count/README.md

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+# Word Count
+
+Given a phrase, count the occurrences of each word in that phrase.
+
+For example for the input `"olly olly in come free"`
+
+```text
+olly: 2
+in: 1
+come: 1
+free: 1
+```
+
+## Exception messages
+
+Sometimes it is necessary to raise an exception. When you do this, you should include a meaningful error message to
+indicate what the source of the error is. This makes your code more readable and helps significantly with debugging. Not
+every exercise will require you to raise an exception, but for those that do, the tests will only pass if you include
+a message.
+
+To raise a message with an exception, just write it as an argument to the exception type. For example, instead of
+`raise Exception`, you should write:
+
+```python
+raise Exception("Meaningful message indicating the source of the error")
+```
+
+## Running the tests
+
+To run the tests, run the appropriate command below ([why they are different](https://github.com/pytest-dev/pytest/issues/1629#issue-161422224)):
+
+- Python 2.7: `py.test word_count_test.py`
+- Python 3.4+: `pytest word_count_test.py`
+
+Alternatively, you can tell Python to run the pytest module (allowing the same command to be used regardless of Python version):
+`python -m pytest word_count_test.py`
+
+### Common `pytest` options
+
+- `-v` : enable verbose output
+- `-x` : stop running tests on first failure
+- `--ff` : run failures from previous test before running other test cases
+
+For other options, see `python -m pytest -h`
+
+## Submitting Exercises
+
+Note that, when trying to submit an exercise, make sure the solution is in the `$EXERCISM_WORKSPACE/python/word-count` directory.
+
+You can find your Exercism workspace by running `exercism debug` and looking for the line that starts with `Workspace`.
+
+For more detailed information about running tests, code style and linting,
+please see [Running the Tests](http://exercism.io/tracks/python/tests).
+
+## Source
+
+This is a classic toy problem, but we were reminded of it by seeing it in the Go Tour.
+
+## Submitting Incomplete Solutions
+
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.

python/word-count/word_count.py

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+import string, re
+def count_words(sentence):
+    sentence = [x.strip(string.punctuation) for x in [word for word in re.split(r'[_,\s]+', sentence.casefold()) if len(word.strip(string.punctuation + string.whitespace)) >= 1]]
+    return {k : sentence.count(k) for k in list(dict.fromkeys(sentence))}

python/word-count/word_count_test.py

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+import unittest
+
+from word_count import count_words
+
+
+# Tests adapted from `problem-specifications//canonical-data.json` @ v1.3.0
+
+class WordCountTest(unittest.TestCase):
+
+    def test_count_one_word(self):
+        self.assertEqual(
+            count_words('word'),
+            {'word': 1}
+        )
+
+    def test_count_one_of_each_word(self):
+        self.assertEqual(
+            count_words('one of each'),
+            {'one': 1, 'of': 1, 'each': 1}
+        )
+
+    def test_multiple_occurrences_of_a_word(self):
+        self.assertEqual(
+            count_words('one fish two fish red fish blue fish'),
+            {'one': 1, 'fish': 4, 'two': 1, 'red': 1, 'blue': 1}
+        )
+
+    def test_handles_cramped_lists(self):
+        self.assertEqual(
+            count_words('one,two,three'),
+            {'one': 1, 'two': 1, 'three': 1}
+        )
+
+    def test_handles_expanded_lists(self):
+        self.assertEqual(
+            count_words('one,\ntwo,\nthree'),
+            {'one': 1, 'two': 1, 'three': 1}
+        )
+
+    def test_ignore_punctuation(self):
+        self.assertEqual(
+            count_words('car : carpet as java : javascript!!&@$%^&'),
+            {'car': 1, 'carpet': 1, 'as': 1, 'java': 1, 'javascript': 1}
+        )
+
+    def test_include_numbers(self):
+        self.assertEqual(
+            count_words('testing 1 2 testing'),
+            {'testing': 2, '1': 1, '2': 1}
+        )
+
+    def test_normalize_case(self):
+        self.assertEqual(
+            count_words('go Go GO Stop stop'),
+            {'go': 3, 'stop': 2}
+        )
+
+    def test_with_apostrophes(self):
+        self.assertEqual(
+            count_words("First: don't laugh. Then: don't cry."),
+            {'first': 1, "don't": 2, 'laugh': 1, 'then': 1, 'cry': 1}
+        )
+
+    def test_with_quotations(self):
+        self.assertEqual(
+            count_words("Joe can't tell between 'large' and large."),
+            {'joe': 1, "can't": 1, 'tell': 1, 'between': 1, 'large': 2,
+             'and': 1}
+        )
+
+    def test_multiple_spaces_not_detected_as_a_word(self):
+        self.assertEqual(
+            count_words(' multiple   whitespaces'),
+            {'multiple': 1, 'whitespaces': 1}
+        )
+
+    def test_alternating_word_separators_not_detected_as_a_word(self):
+        self.assertEqual(
+            count_words(",\n,one,\n ,two \n 'three'"),
+            {'one': 1, 'two': 1, 'three': 1}
+        )
+
+    # Additional tests for this track
+
+    def test_tabs(self):
+        self.assertEqual(
+            count_words('rah rah ah ah ah\troma roma ma\tga ga oh la la\t'
+                        'want your bad romance'),
+            {'rah': 2, 'ah': 3, 'roma': 2, 'ma': 1, 'ga': 2, 'oh': 1, 'la': 2,
+             'want': 1, 'your': 1, 'bad': 1, 'romance': 1}
+        )
+
+    def test_non_alphanumeric(self):
+        self.assertEqual(
+            count_words('hey,my_spacebar_is_broken.'),
+            {'hey': 1, 'my': 1, 'spacebar': 1, 'is': 1, 'broken': 1}
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()