constants class?

[clarkedavida]

If you are not careful with lists, you can accidentally change variables without meaning to through shallow copies. Is there a way to implement a constants class that can't be accidentally modified?

Maybe something like this: https://discuss.dizzycoding.com/can-i-prevent-modifying-an-object-in-python/

[luhuhis]

I do that usually like this:

from typing import NamedTuple
class test(NamedTuple):
    blub: int
    bla: float

this_test = test(4, 3.2)
this_test.blub = 5  # this will fail, because it's immutable.

This can be used to pass one immutable "parameter object" to a function, instead of passing lots of single parameter which are then also mutable.