Answers for "how to know in which environment python package is installed"

creating virtual environment python

python3 -m venv tutorial-env
#name : tutorial-env
tutorial-envScriptsactivate 	#activate env
deactivate #deactivate env

activate virtual environment python

Install venv with this command:
	pip install virtual env
    
Create a directory and type the following command in terminal:
	python -m venv virtual <-- "The last word in command is the name of the venv, you can call it whatever you want."
    
Activate virtual environment:
	source virtual/bin/activate