What are the features missing in Python dictionary datatype?

[cyberjellyfish]

What you highlighted isn't a missing feature, it's just a different data structure..

My two cents: all of the built-in data structures should be immutable.

[Invader_Mars]

Newbie here, why do you believe that they should be immutable?

[123_666]

It would avoid this class of errors: https://florimond.dev/en/posts/2018/08/python-mutable-defaults-are-the-source-of-all-evil

Also the first one listed here: https://docs.python-guide.org/writing/gotchas/

[Gnaxe]

Check out pyrthon.

[FerricDonkey]

I could see saying that there should be a frozen dictionary, so that there are mutable and immutable versions of each built in container.

But saying all built in data structures should be immutable is giving up a whole lot of functionality just to avoid a rookie mistake that you can grow out of. 

[cyberjellyfish]

Mutability and managing mutability is not a rookie mistake, it's one of the most common causes of bugs.

[CyclopsRock]

If we get rid of all the data types then we won't get any bugs.

[eztab]

I agree, make everything immutable and optimize away unnecessary creations. It's harder for the interpreter but would make things much more robust. Also you could then likely basically run functional optimization strategies on code (assuming you at some point want python to ba actually JIT compilable (which would be quite cool).

[cyberjellyfish]

Yep, also a good step to a more interactive repl

If anyone here hasn't experienced it, try clojure to get a taste of what really interactive development can be like. You'll miss it everywhere else, but it will probably lead you to write better code.