how to make a new enviromen with pip 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: how to make a venv python

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

source env/bin/activate

#all this is on same directory