Migrating of python2 script to python3

[zuri]

pip did drop support for Python 2.7 in version 21.0.
So have to install a older version pip install pip==20.0
There is no need to upgrade Python 2.7,if migrate older code you use 2to3 from a Python 3 version.
So need have Python 3 version where test(and use tool eg 2to3) that the older 2.7 code works.

sorry I'm not so good at it, what exactly should i do now just run the code on python3 version and check whether it runs or not??