Re: how to get self in callback function

Update:

I was getting this error:
File "_ctypes/callbacks.c", line 291, in 'calling callback function'
TypeError: standard_vote_callback() takes exactly 5 positional
arguments (4 given)

Since this was the first time using ctypes, I thought the error I got
above was actually a feature. But I was getting it because I was
passing class method instead of an instance method.

Looking closely at my code, I realized that if I assumed I got self
for free, it all worked, and there's no need to use the context
argument.

-Adam

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