cross-posted from: https://feddit.de/post/248196
> I have lots of multiprocessing processes which have to add to and search in a dict. Deletion of values is not needed.
> Atm I am using multiprocessing.Manager() and
> `dict = manager.dict()`
> This works pretty well, but I think that the manager is a huge bottleneck here. Any ideas? It has to run on older Python 3 versions, otherwise I would use this cool thing I found: https://github.com/ronny-rentner/UltraDict
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The only differences are that tuples are immutable and that lists have extra methods.
Is there ever a strong need for list-type data to be immutable? Evough to justify a whole extra data-type in the language?
Should they release a python 4 with it removed?
The only thing I can think of is as a default function parameter. This function is okay:
a = (a, 3)
But this function misbehaves the second time it is called:
a = 3
But IMO the "mutable arguments" thing is another bug to be fixed in a hypothetical python 4. And even in python 3 you just write the function the recommended way, so there is not such a big problem.
if a is None:
a = [1, 2]
a = 3
The Python devs are clever guys though. There must be some really important reason to maintain both types?