Python Fun

Playing with Python and Functional Programming (FP) concepts after watching:

The Power of Composition by Scott Wlaschin

Content

• compose function:

  • Implementation: src/compose.py 👈 Click here to check it out!
  • Tests: tests/test_compose.py

• pipe function (syntactic sugar):

  • Implementation: src/pipe.py
  • Tests: tests/test_pipe.py

• The Think Of A Number game shown in Scott's presentation:

  • Implementation: src/think_of_a_number.py
  • Tests: tests/test_think_of_a_number.py

• The solution to the Roman Numerals problem:

  • Implementation: src/roman_numerals.py
  • Tests: tests/test_roman_numerals.py

• The "Don't do this in an interview" FizzBuzz solution:

  • Implementation: src/fizzbuzz.py
  • Tests: tests/test_fizzbuzz.py

How do I run the tests?

To type check the code:

docker-compose run python-fun mypy /code --pretty --config-file=pyproject.toml

To run the tests:

docker-compose run python-fun pytest /code/tests -vv -s

Notes

To type check the code, I configured mypy following this article.

I decided to turn-off the mypy rule called warn_return_any to avoid using the # type: ignore comment when using the pipe function.