Squash the Bugs

Pre-requisites

Python 3.11 (3.11.9 is fine)

Setup

Make sure you use the right python executable depending on your OS and setup.

$ python --version
Python 3.11.9

Next, setup a virtual environment and install the dependencies. Feel free to diverge if you're used to a certain flow.

$ python -m venv venv
# Linux
$ venv/bin/pip install -r requirements.txt
# Windows
$ venv\Scripts\pip install -r requirements.txt

Run the Application

Start by populating the work directory:

$ mkdir -p wrk/in
$ cp data/earth.mp4 wrk/in/

Now run the application. The command below assumes you've activated the virtual environment:

$ python -m capit

Lint

This project uses ruff and mypy.

$ ruff check
$ mypy .

If you're not familiar with those tools, it doesn't matter.

Run the Tests

$ pytest

You should see 4 failed and 1 passed.

Selecting Tests

If you've ran pytest tests from your IDE in the past, then feel free to do so. If not, or if you just prefer the CLI, you can target specific tests using fully-qualified test IDs:

$ pytest tests/test_core.py::test_processes_existing_file

or using "keyword expressions"

$ pytest -k "existing"

Alternatively, you can add the @pytest.mark.only decorator on a test.

Your Mission

1. Fix the Tests

Make all the tests pass. Tackle them in the order that they are defined.

2. Discuss the Challenges

Grep for CHALLENGE- comments in the code and discuss, or even implement!

selimb/python-interview