On Oct 3, 2011, at 6:12 AM, Lars Buitinck wrote: > After some digging, I found out that Counter [2] does not > have __iadd__ and += copies the entire left-hand side in __add__!
This seems like a reasonable change for Py3.3. > I also figured out that I should use the update method instead, which > I will, but I still find that uglier than +=. I would submit a patch > to implement __iadd__, but I first want to know if that's considered > the right behavior, since it changes the semantics of +=: Yes, update() is the fastest way. Raymond
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