Convert a phrase to its acronym.
Techies love their TLA (Three Letter Acronyms)!
Help generate some jargon by writing a program that converts a long name like Portable Network Graphics to its acronym (PNG).
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:
raise Exception("Meaningful message indicating the source of the error")
To run the tests, run the appropriate command below (why they are different):
Alternatively, you can tell Python to run the pytest module (allowing the same command to be used regardless of Python version):
python -m pytest acronym_test.py
-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
Note that, when trying to submit an exercise, make sure the solution is in the
You can find your Exercism workspace by running
exercism debug and looking for the line that starts with
For more detailed information about running tests, code style and linting, please see Running the Tests.
Julien Vanier https://github.com/monkbroc
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
import unittest from acronym import abbreviate # Tests adapted from `problem-specifications//canonical-data.json` @ v1.6.0 class AcronymTest(unittest.TestCase): def test_basic(self): self.assertEqual(abbreviate('Portable Network Graphics'), 'PNG') def test_lowercase_words(self): self.assertEqual(abbreviate('Ruby on Rails'), 'ROR') def test_punctuation(self): self.assertEqual(abbreviate('First In, First Out'), 'FIFO') def test_all_caps_words(self): self.assertEqual(abbreviate('GNU Image Manipulation Program'), 'GIMP') def test_punctuation_without_whitespace(self): self.assertEqual( abbreviate('Complementary metal-oxide semiconductor'), 'CMOS') def test_very_long_abbreviation(self): self.assertEqual( abbreviate("Rolling On The Floor Laughing So Hard That " "My Dogs Came Over And Licked Me"), "ROTFLSHTMDCOALM") def test_consecutive_delimiters(self): self.assertEqual( abbreviate('Something - I made up from thin air'), 'SIMUFTA') def test_apostrophes(self): self.assertEqual(abbreviate("Halley's Comet"), 'HC') if __name__ == '__main__': unittest.main()
def abbreviate(words): ans = "" for word in words.split(): if "-" in word: a = word.split("-") b = word.split("-") try: if a.isalpha() and b.isalpha(): ans += a.upper() ans += b.upper() continue except: pass c = word.upper() if c.isalpha(): ans += c return ans
A huge amount can be learned from reading other people’s code. This is why we wanted to give exercism users the option of making their solutions public.
Here are some questions to help you reflect on this solution and learn the most from it.