我应该使用系统还是将pipenv用于多个Python版本？

Question

I have multiple versions of Python installed on my machine using pyenv .

$ pyenv versions
  system
  2.7.16
  3.4.9
  3.5.7
  3.6.8
* 3.7.2 

For each I need to create virtualenvs using pipenv . Should I use the system pipenv for this (installed with a package manager or pip ) or a separate pipenv per interpreter (installed with pip ). What are the pros and cons of both approaches?

Answer 1

Here's how I do it. My system requires certain versions of Python 2/3 because I install stuff that needs these dependencies.

All of my own projects run in their own virtual environments, which contain their own sets of dependent modules. So when I create a new project for myself, I build that off the system Python:

> mkdir my-project
> cd my-project
> python3.7 -m venv .

…or any other Python version I need (although I usually stick with Python 3).