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Revamped generic class behavior to conform to updated PEP 484 #195
It looks great! Still I have found something that I think could be confusing.
First, I would expect that
Second (maybe related) issue is that now
Ah, yes. I thought of making
Ditto for repr(). The one important thing about repr() is that when you have
then repr(C) shows
Anyway, thanks for the encouragement. I hope others look over this important change too! I intend to land this in Python 3.5.2 (whenever it is released).
referenced this pull request
Mar 26, 2016
I am now thinking about one additional thing that might be not completely clear: covariance. If I initially have
class C(Iterable[Tuple[T,S]]): ...
then one could be not sure whether
Good point. IMO nothing having to do with variance is obvious, so it would be good to spell it out. Right now I'm too tired to reason this through with a few examples, but my intuition says that your "natural" answer is probably correct. When I feel more rested I'll figure this out and add it to the PEP.