I’m not very experienced with dependency management in Python but it seems that all of the dependencies in
requirements.txt could alternatively be placed in the
setup.py file under the
install_requires field as follows:
setup( ... install_requires=['numpy=1.2.3', 'pandas=1.2.3'] ... )
pip install ./ using a
setup.py file also provides lots of additional functionality compared to
pip install -r requirements.txt, what is the use for the latter? Would a project ever have a valid reason to use both?
pip install . installs your custom package with all its dependencies.
pip install -r requirements.txt installs only the dependencies.