Collect Python project dependencies

Sometimes we need to figure out dependencies of our Python project. I have been using the below two approaches to get it done:

Using pipreqs

If we want to collect all the dependencies and store them in a project-level 'requirement.txt' file, then

pipreqs is an easy and simple solution. This library analyzes the import statements in the project to gather dependencies.

First, we need to install pipreqs:

pip install pipreqs

In order to generate project-level requirement.txt file, run the below command:

pipreqs /path/to/your/project/

requirements file would be saved as- '/path/to/your/project/requirements.txt'
To read about more advantages of pipreqs over pip freeze, read it from here

Using pipdeptree
  
I have written a more detailed post about visual representation of python packages using 'pipdeptree' library in this blog.

'pipdeptree' provides more advanced options such as listing the dependencies in html format or exporting them in some image format etc.

Here is the most basic use of pipdeptree

Install the package

pip install pipdeptree

Generate dependency graph in console

cd <your project root>

pipdeptree