python virtual enviroments 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: virtual environment python

py -m venv env ## For windows and Python 3
.\env\Scripts\activate
deactivate

Example 4: python virtual env

$ virtualenv -p /usr/bin/python2.7 venv