Python Testing with pytest

Testing requirements.txt-Based Applications

A script or application may have dependencies—other projects that need to be installed before the script or application can run. A packaged project like Cards has a list of dependencies defined in either a pyproject.toml, setup.py, or setup.cfg file. Cards uses pyproject.toml. However, many projects don’t use packaging, and instead define dependencies in a requirements.txt file.

The dependency list in a requirements.txt file could be just a list of loose dependencies, like:

ch12/sample_requirements.txt

typer
requests

However, it’s more common for applications to “pin” dependencies by defining specific versions that are known to work:

ch12/sample_pinned_requirements.txt

typer==0.3.2
requests==2.26.0 ...