How to install all the dependencies with pip?

问题

I have a NodeJS API and a Python script. I deployed it on Heroku. The API call runs the python scripts.

When I deployed the NodeJS API then type npm install and all works fine but not for python. There is a lot of pip package to install, how can I make this work same as in my local environment?

In short, what is the "One command to install them all"?

回答1:

You should define your requirements in a requirements.txt file and then

pip install -r requirements.txt

will install all at the same time.

You can create it by

pip freeze > requirements.txt

but should include only the packages you really use.

来源：https://stackoverflow.com/questions/63264573/how-to-install-all-the-dependencies-with-pip