fix(python): fix comparison to None

[e-kwsm]

from PEP8 (https://peps.python.org/pep-0008/#programming-recommendations):

Comparisons to singletons like None should always be done with is or is not, never the equality operators.

[marifamd]

Thank you for pointing this out, however with argparse we have the possibility of None type objects specifically, so that is why args.x == None is being used

[e-kwsm]

This is the correct way to compare an object against None.