What is pip's equivalent of `npm install packa

Question

In nodejs, I can do npm install package --save-dev to save the installed package into the package.

How do I achieve the same thing in Python package manager pip? I would like to save the package name and its version into, say, requirements.pip just after installing the package using something like pip install package --save-dev requirements.pip.

Answer 1

I made a quick hack on pip to add --save option to install/uninstall commands.

Please have a look at my blog for more information about this hack: http://blog.abhiomkar.in/2015/11/12/pip-save-npm-like-behaviour-to-pip/

Installation (GitHub): https://github.com/abhiomkar/pip-save

Hope this helps.

Answer 2

Update: apparently, pipenv is not officially endorsed by Python maintainers, and the previously-linked page is owned by a different organization. The tool has its pros and cons, but the below solution still achieves the result that the OP is seeking.

pipenv is a dependency management tool that wraps pip and, among other things, provides what you're asking:

https://pipenv.kennethreitz.org/en/latest/#example-pipenv-workflow

$ pipenv install <package>

This will create a Pipfile if one doesn’t exist. If one does exist, it will automatically be edited with the new package your provided.

A Pipfile is a direct equivalent of package.json, while Pipfile.lock corresponds to package-lock.json.