This is a simple example of how to use Python's built-in unittest module to write and run unit tests.

Interleave string solution is from my own Leetcode submission.

• To run the tests and downloaded required packages:

sh build.sh

• Example of Canary and regular tests are in ./tests/interleave_tests.py
• Expected result is

Ran 5 tests in 0.000s

OK

• build.sh: This script installs required pip packages and runs the tests using "python3."
• requirements.txt: This file is used by pip to install packages. If you require any packages, you can add them here.
• src: This directory contains your source files, i.e., your code.
• tests: All your tests are located here.

unittest is the preinstalled Python testing library. There are alternatives you may consider, such as Pytest. Running the test is as simple as:

python -m unittest [directory]

If you prefer a more verbose output, add -v:

python -m unittest -v [directory]

For most, pip is your go-to for packages. For those coming from JavaScript, there isn't a package.json; the alternative is requirements.txt. You can include any required packages in this file, and anyone using pip can install them simply.

Example requirements.txt:

pip==22.3.1
wheel==0.38.4
Pillow==9.5.0
setuptools==65.5.1
packaging==23.1
numpy==1.26.0

To install the packages, it is as simple as:

pip install -r requirements.txt

Have fun! If you find a mistake or an improvement, please drop a pull request and let me know!