create env for python 3 code example

Example 1: crete venv with pyhton3

virtualenv -p python3 envname

Example 2: how to create environment in python3.7

# by runnin this command you can directly create python environment in with python3.7 version
python3.7 -m venv <venv_name>

Example 3: python venv

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

Example 4: start python virtual

activate venv

Example 5: python createvirtual env

python3 -m venv tutorial-env