What is the correct way to avoid AttributeError: 'NoneType' object has no attribute 'strip' in python 2.7?

Question

Python

Hello.
in the python code for parsing html text, I use everything works fine in the version of the interpreter 3.6, BUT if you switch to 2.7, then the error is reproduced
date_start_job=(data[y].get("Дата")).strip()

date_start_job=(data[y].get("Дата")).strip()
AttributeError: 'NoneType' object has no attribute 'strip'

How to solve this problem?