Calling Python 2 script from Python 3

Question

I have two scripts, the main is in Python 3, and the second one is written in Python 2 (it also uses a Python 2 library).

There is one method in the Python 2 script

Answer 1

Maybe to late, but there is one more simple option for call python2.7 scripts:

script = ["python2.7", "script.py", "arg1"]    
process = subprocess.Popen(" ".join(script),
                                        shell=True,  
                                        env={"PYTHONPATH": "."})