diff --git a/python/pangram/README.md b/python/pangram/README.md new file mode 100644 index 0000000..d2a77ac --- /dev/null +++ b/python/pangram/README.md @@ -0,0 +1,58 @@ +# Pangram + +Determine if a sentence is a pangram. A pangram (Greek: παν γράμμα, pan gramma, +"every letter") is a sentence using every letter of the alphabet at least once. +The best known English pangram is: +> The quick brown fox jumps over the lazy dog. + +The alphabet used consists of ASCII letters `a` to `z`, inclusive, and is case +insensitive. Input will not contain non-ASCII symbols. + +## 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 pangram_test.py` +- Python 3.4+: `pytest pangram_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 pangram_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/pangram` 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 + +Wikipedia [https://en.wikipedia.org/wiki/Pangram](https://en.wikipedia.org/wiki/Pangram) + +## Submitting Incomplete Solutions + +It's possible to submit an incomplete solution so you can see how others have completed the exercise. diff --git a/python/pangram/pangram.py b/python/pangram/pangram.py new file mode 100644 index 0000000..dba6ab7 --- /dev/null +++ b/python/pangram/pangram.py @@ -0,0 +1,7 @@ +from string import ascii_lowercase + +def is_pangram(sentence): + for char in ascii_lowercase: + if char not in sentence.lower(): + return False + return True \ No newline at end of file diff --git a/python/pangram/pangram_test.py b/python/pangram/pangram_test.py new file mode 100644 index 0000000..8609385 --- /dev/null +++ b/python/pangram/pangram_test.py @@ -0,0 +1,58 @@ +import unittest + +from pangram import is_pangram + + +# Tests adapted from `problem-specifications//canonical-data.json` @ v1.4.1 + +class PangramTest(unittest.TestCase): + + def test_sentence_empty(self): + self.assertIs(is_pangram(''), False) + + def test_recognizes_a_perfect_lower_case_pangram(self): + self.assertIs(is_pangram('abcdefghijklmnopqrstuvwxyz'), True) + + def test_pangram_with_only_lower_case(self): + self.assertIs( + is_pangram('the quick brown fox jumps over the lazy dog'), + True) + + def test_missing_character_x(self): + self.assertIs( + is_pangram('a quick movement of the enemy will ' + 'jeopardize five gunboats'), + False) + + def test_another_missing_character(self): + self.assertIs(is_pangram('five boxing wizards jump quickly at it'), + False) + + def test_pangram_with_underscores(self): + self.assertIs( + is_pangram('the_quick_brown_fox_jumps_over_the_lazy_dog'), + True) + + def test_pangram_with_numbers(self): + self.assertIs( + is_pangram('the 1 quick brown fox jumps over the 2 lazy dogs'), + True) + + def test_missing_letters_replaced_by_numbers(self): + self.assertIs( + is_pangram('7h3 qu1ck brown fox jumps ov3r 7h3 lazy dog'), + False) + + def test_pangram_with_mixedcase_and_punctuation(self): + self.assertIs( + is_pangram('"Five quacking Zephyrs jolt my wax bed."'), + True) + + def test_upper_and_lower_case_versions_of_the_same_character(self): + self.assertIs( + is_pangram('the quick brown fox jumped over the lazy FX'), + False) + + +if __name__ == '__main__': + unittest.main()