Automatically create requirements.txt

Question

Sometimes I download the python source code from github and don't know how to install all the dependencies. If there is no requirements.txt file I have to create it by hands. The question is: Given the python source code directory is it possible to create requirements.txt automatically from the import section?

Answer 1

If you use virtual environment, pip freeze > requirements.txt just fine. If not, pigar will be a good choice for you.

By the way, I do not ensure it will work with 2.6.

UPDATE:

Pipenv or other tools is recommended for improving your development flow.

Answer 2

You can use the following code to generate a requirements.txt file:

pip install pipreqs

pipreqs /path/to/project

more info related to pipreqs can be found here.

Sometimes you come across pip freeze, but this saves all packages in the environment including those that you don't use in your current project.