Use pip in a virtual environment

 

If you haven't yet learned a tool to set up a virtual environment, I highly recommend it. All Python programmers should learn one. I recommend venv or virtualenv to beginners. To install venv, run:

sudo apt install python3-venv

Then create a virtual environment in your project directory like this:

 python3 -m venv .venv

Now activate your virtual environment by running:

 source .venv/bin/activate

This modifies your PATH environment variable to include .venv/bin/. Now you can install PyPI packages using pip into your virtual envirnoment (in this case .venv/), like this:

pip install requests

If you don't want to activate and deactivate virtual environments, you can run pip and python directly from the virtual environment, like this:

$ .venv/bin/pip install requests
$ .venv/bin/python
>>> import requests
>>> 

 https://stackoverflow.com/questions/75608323/how-do-i-solve-error-externally-managed-environment-every-time-i-use-pip-3