Question

I am looking at this python code for EPGReader and am trying to understand how reader = self.PIDHandlers.get(headers.PID, None)works. What does the get return?

So, PIDHandlers is dict is made up of the TSSectionReader class and that calls the SDTSectionContainer class. Have I understood this correctly?

My goal is to add code to process PAT tables and I am forcing myself to understand someone else’s code instead of copping out and writing my own.

Answer 1

PIDHandlers is a dict, yes. The get call returns PIDHandlers[headers.PID] if headers.PID is in PIDHandlers.keys(), or None otherwise.

get is just a dict access which doesn’t throw KeyError, instead returning the given default.