Python dicts are now ordered

Re:Python dicts are now ordered by yurlungur on Friday February 07, 2020 @12:53PM (#22268673)

Yeah I think this is probably my main issue. I don't think it's reasonable to ask users of your code to always use 3.7+ instead of 3.6 if they are usually expected to be compatible. And it's also unnecessary to break such compatibility for something like preferring dict over OrderedDict anyways. At least I would try to avoid any such issues by still using OrderedDict.

That said, I have no idea about the internals of dict. I assume no performance was sacrificed for this change.

[ Parent | on HN ]

Re:Python dicts are now ordered by TheFlyingFish on Friday February 07, 2020 @02:09PM (#22269553)

It actually improves performance. Or at least, it comes along with a set of performance improvements that give you ordering for free. Raymond Hettinger has a great talk on it: https://www.youtube.com/watch?v=npw4s1QTmPg&t=1s

[ Parent | on HN ]

Re:Python dicts are now ordered by viraptor on Friday February 07, 2020 @05:12PM (#22271634)

Using OrderedDict is actually nice in this case, even if the default dict has the same ordering. That way you're explicitly saying you rely on that behaviour and it makes reading the code easier.

[ Parent | on HN ]