How to call python2 from python3 program?

Question

I need to call an independent module written in python2 (pass some parameters) in a program written in python3. In addition to using subprocess, is there a more elegant way?

Answer 1

It’s better to upgrade 2 to 3. Use py2to3.py

Answer 2

Use __future__ in python2?

Answer 3

A more elegant way is to upgrade the python2 program to a python3 program.