Best way to check if an object is None?

Question

How should I fix this error? Seems like an unresolved issue in this repository: https://github.com/shayanzare007/EntitySentiment/issues/7

$ python RunRNN.py 
Num         


        

Answer 1

When testing an object for nullity, the recommended practice is to always use is:

if idxiter is None:
    ...

It's safer, especially because not all objects support equality comparisons with None.