how to install a separate version of python in my virtual environment code example

Example 1: uses specific version python venv

# Use python version 3.7.3 for tensorflow
pip install virtualenv 
virtualenv -p PYTHONPATH <path/to/new/virtualenv/>

Example 2: how to make a virtual environment python 3

#create the venv
python -m venv name_virtual_env
    #or
python3 -m venv name_virtual_env

#activate venv
    #linux:
source name_virtual_env/bin/activate

    #windows
name_virtual_env\Scripts\activate