How Name Mangling is supposed to work in python-attrs? (double leading underscores)

[txemi]

Converting some classes to atts I found that there is not a documented way to work with name mangling. I am aware of pythonic way in wich forcing is not common, trusting responsible adults instead it is and name mangling is not commonly used; but anyway I sometimes use it for preventing accidents where it is clear that some data should not be accesed from outside the class.

What has python-atts to say about this? (Direct approach does not work, I already tried and constructor with keyword fails with "TypeError: missing a required argument")

[hynek]

attrs automatically removed leading underscores when determining the argument names: https://www.attrs.org/en/stable/init.html#private-attributes

[txemi]

Sorry, I did not undertand. May I use this?

@define class C: __x: int

It did not work when I tried to init __x from constructor.

attrs automatically removed leading underscores when determining the argument names: https://www.attrs.org/en/stable/init.html#private-attributes

[hynek]

Ah yeah I'm sorry I misread on my phone an answered from memory.

This is in fact currently not supported and is a dupe of #619.

As you wrote, using name mangling is rather uncommon nowadays, so nobody came forward to push for a proper implementation.

[wbolster]

closing as dup to keep discussion centralized; see #619