Any specific case when Python >3.6.1 dict() is not ordered?

Asked Apr 16 '18 at 14:49

Active Apr 16 '18 at 14:51

Viewed 47 times

From Python version 3.6.1, dict() is ordered.

However the devs specifically warn to do not rely on this. Why? I really would like to rely on dictionaries being ordered.

I tested it over and over and I can't find any unexpected behaveior, the keys are always ordered. Am I missing something? Is there any particular case I should be aware of and I should absolutely not rely on the order of keys in dict()?

edited Apr 16 '18 at 14:51

asked Apr 16 '18 at 14:49

alec_djinn

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Why not just use an ordered dict? – Dschoni Apr 16 '18 at 14:51
@Dschoni to my understanding, dict() is faster than OrderedDict() – alec_djinn Apr 16 '18 at 14:52
Could you provide a link for the first two statements? – FlyingTeller Apr 16 '18 at 14:53
@FlyingTeller https://www.youtube.com/watch?v=npw4s1QTmPg – alec_djinn Apr 16 '18 at 14:55
@jpp I think my question is different. I am not asking the details of the implementation, but whether I can rely on the order or not, if not, are there specific cases I should be aware of etc... – alec_djinn Apr 16 '18 at 15:01
@alec_djinn, the first answer gives a detailed explanation: Are dictionaries ordered in Python 3.6+? => They are insertion ordered. The second answer has more detail on your question. – jpp Apr 16 '18 at 15:02
@jpp ok, indeed I am satisfied with the answers given on that post. Thanks for sharing. – alec_djinn Apr 16 '18 at 15:05

Any specific case when Python >3.6.1 dict() is not ordered?

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