Find all required python library inside a project

I was using Python3.8 throughout a project but suddenly one of the required library require Python3.7 to work with, therefore I need to mirgrate everything to another virtual environment.

So I need to know the dependency that I was using in order to do migration, just do the following:

We start off installing

pip install pipreqs

Next cd into working directory and then

[working directory]>pipreqs .

which yields a message:

INFO: Successfully saved requirements file in .\requirements.txt

that looks like the following:

now switch into our virtual environment and pip install them:

pipenv shell
pip install -r requirements.txt

and we are done.