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How it works...
Notice that inside the virtual environment you can use python instead of python3, although python3 is available as well. This will use the Python interpreter defined in the environment.
In some systems like Linux, it's possible that you need to use python3.7 instead of python3. Verify that the Python interpreter you're using is 3.7 or higher.
Inside the virtual environment, step 3 of the How to do it... section installs the most recent version of pip, without affecting the external installation.
The virtual environment contains all the Python data in the .venv directory, and the activate script points all the environment variables there. The best thing about it is that it can be deleted and recreated very easily, removing the fear of experimenting in a self-contained sandbox.
Remember that the directory name is displayed in the prompt. If you need to differentiate the environment, use a descriptive directory name, such as .my_automate_recipe, or use the --prompt option.