python what is 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: activate virtual environment python

source virtual/bin/activate

Example 3: how to use virtual environment python

python3 -m pip install --user virtualenv

Example 4: create a virtualenv python3

py -m venv env