python virtual environment why code example

Example 1: virtual env in python

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

Example 2: python venv usage

python3 -m venv /path/to/new/virtual/environment

Example 3: python venv

python3 -m venv /path/to/new/virtual/environment

Example 4: how virtual environment in python works

>>> import sys
>>> sys.prefix
'/System/Library/Frameworks/Python.framework/Versions/3.5'