using virtual environment python code example

Example 1: python virtual environment

python3 -m venv env
python -m virtualenv env #py2

source env/bin/activate

#all this is on same directory

Example 2: virtual env in python

pip install --user virtualenv
py -m venv env
.\env\Scripts\activate

Example 3: how to use virtual environment python

python3 -m pip install --user virtualenv