how to make a python virtual environment 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: python virtual env

$ cd project_folder
$ virtualenv venv

Example 3: activate venv

venv\Scripts\activate.bat

Example 4: how to make a virtual environment in python

.\env\Scripts\activate