go on to your project root directory
first create a virtual environment with syntax
python3 -m venv <env-name>
python3 -m venv niceproject
a folder called niceproject will be automatically
cd into <projectname>
cd niceproject
then in the Scripts folder
cd Scripts
then just type
activate
it will activate as there is an activate.bat in the Scripts folder
pip install what you wish
then type
deactivate
to disactivate the virtualenv