Create Python virtual environments

While the software industry matures a number of release , versions are available. If you want to use multiple versions of Python on the same computer you can use Pyenv. In combination with virtualenv you can create a dynamic local Python development environment

Selecting the Python version you want.

1. Install pyenv
2. Use pyenv install -l to see the available versions

3. Install the version you want

   pyenv install 3.6.15

Create day-to-day virtual environments.

1. Install virtualenv

2. create the virtual environment

   pyenv virtualenv 2.7.16 apps2

Activate virtual environments locally

1. Create the environment

   pyenv virtualenv 3.7.4 rst2pdf-py3

2. Use pyenv local withing directory

    cd ~/dev/rst2pdf
    pyenv local rst2pdf-py3