Python 2 to 3 migration

pythonclock.org is a pretty simple countdown for the end of Python 2.
The End Of Life, sunset date for Python 2.7 is officially announced to January 1, 2020.

It’s not a 1 April fool joke and not a really something new.
Python 3, a major, backwards-incompatible release, was released on December 3, 2008. [2]
So lets say, it was pretty clear who has not switched to Python 3 version,
it’s your own fault.

This a simple dive in for converting Python code from version 2 to Python 3.

2to3 is a Python program that reads Python 2.x source code and applies a series of fixers to transform it into valid Python 3.x code.

pip3 install 2to3

Basic usage, the converted Python3 code will shown on stdout:

2to3 example.py

Inline converting with auto backup creation example.py.bak:

2to3 -w example.py

From now, worry only about supporting your Python 3 code ;)
This tools will help you to make sure, you code will be runable and readable.

pip3 install pylint
pip3 install pycodestyle
pip3 install autopep8

Run code verifications for your code:

pylint example.py
pycodestyle example.py
autopep8 example.py

Sources:
[1] Porting Python 2 Code to Python 3
[2] What’s New In Python 3