Speaking as someone who Friday had to fix an embarrassing bug in my Python code because lists aren’t immutable when passed to another function, I like the way you think.
I will say, however, that what I want from Python isn’t actually “frozen” data structures but cloned ones (or, like some/most FP languages, structures with nested values that are only cloned when necessary).
I will say, however, that what I want from Python isn’t actually “frozen” data structures but cloned ones (or, like some/most FP languages, structures with nested values that are only cloned when necessary).
Vals, not vars.