创建一个没有开发依赖的requirements.txt

Question

In development often additional packages are needed which I have installed in my venv , which are not needed in production contrary to other packages I also installed in my venv . What's the cleanest way to produce a requirements.txt which does have all the requirements except the once I only need in development (like mypy or autopep8 )

This answer shows how to do it but the method is very cumbersome.

Answer 1

I'd recommend using pip-compile , from https://pypi.org/project/pip-tools/ .

This lets you define an "in" file, requirements.in , which just lists your top-level dependencies, eg:

requirements.in :

flask

Then you generate the requirements.txt with pip-compile :

$ pip-compile --output-file=requirements.txt requirements.in
#
# This file is autogenerated by pip-compile
# To update, run:
#
#    pip-compile --output-file=requirements.txt requirements.in
#
click==7.1.2              # via flask
flask==1.1.2              # via -r requirements.in
itsdangerous==1.1.0       # via flask
jinja2==2.11.2            # via flask
markupsafe==1.1.1         # via jinja2
werkzeug==1.0.1           # via flask

Then you can have separate .in / .txt files for different environments, like test.in / test.txt .

And finally, you can recursively include multiple requirements files, eg

dev-requirements.txt :

-r requirements.txt
-r test.txt
-r lint.txt