[ewi_]

I love python, and I don't know if the GP are good points, but your answer is really disengenuous.

> > pattern matching

> We have that in Python 3.10.

> > immutability-by-default for lists and dictionaries

> We do have tuples and frozendict.

3.10 like the version that is not released yet?

Tuples an frozendicts, so precisely non default list and dicts?

[mypalmike]

The tools are there but you don't like their names.

[c-cube]

Neither tuples nor frozen dicts offer efficient (logarithmic or constant time) updates, like lists or balanced trees or HAMT do. You can't really write a program with only immutable structures in python, unless you accept it will be unbearably slow, even for python. Clojure, erlang, elixir, these are dynamically typed and functional.