Support for PySide6's snake_case __feature__

[HealsCodes]

When using qasync together with the snake_case feature of PySide6 the following messages will be printed every few milliseconds:

Traceback (most recent call last):
File "REDACTED/.venv/lib/python3.10/site-packages/qasync/init.py", line 287, in timerEvent
self.killTimer(timerid)
Traceback (most recent call last):
File "REDACTED/.venv/lib/python3.10/site-packages/qasync/init.py", line 285, in timerEvent
del self.__callbacks[timerid]
KeyError: 1

The base issue is that snake_case causes PySide to export all methods in snake_case instead of camelCase.
A fix would be for qasync to check for the existence of the expected method and otherwise assume snake_case:

class _SimpleTimer(QtCore.QObject):
    def __killTimer(self, timerId):
        try:
          self.killTimer(timerId)
        except AttributeError:
          self.kill_timer(timerId)

snake_case is one of the new features added in PySide6 which cane be user enabled but affect the whole runtime.
true_property would be another which replaces the .getXY() and .xy pairs with real assignable object properties.

Both of them can be enabled like this:

import PySide6
from __feature__ import (snake_case, true_property)

[hosaka]

Would be quite a change to add support for this, at least snake_case and true_property would have to be separate PRs. I am not able to even run a basic app:

Traceback (most recent call last):
  File "E:\qasync\qasync\__init__.py", line 347, in __init__
    signaller.signal.connect(lambda callback, args: self.call_soon(callback, *args))
AttributeError: 'Signaller' object has no attribute 'disconnectNotify'

Is there anything special about installing pyside6 with snake_case enabled? If we could pick-up which features are enabled and use different variants based on that, instead of a bunch of try/excepts, I could look into it.

[HealsCodes]

Is there anything special about installing pyside6 with snake_case enabled? If we could pick-up which features are enabled and use different variants based on that, instead of a bunch of try/excepts, I could look into it.

Sadly, no.
Both are features you can enable at runtime and part of the normal PySide6 as is available from PyPi.
And sadly no way I know off to test in a module like qasync if the parent module has them enabled outside of inspecting a "known good" class like QObject.

>>> import PySide6
>>> from PySide6.QtCore import QObject

>>> hasattr(QObject, 'objectName')
True

>>> hasattr(QObject, 'setObjectName')
True

>>> hasattr(QObject, 'object_name')
False


>>> from __feature__ import(snake_case, true_property)

>>> hasattr(QObject, 'objectName')
False

>>> hasattr(QObject, 'setObjectName')
False

>>> hasattr(QObject, 'object_name')
True

Something like this would work to check the current state:

from PySide6.QtCore import QObject

def is_snake_case_enabled() -> bool:
    return hasattr(QObject, 'object_name')

def is_true_property_enabled() -> bool:
    return hasattr(QObject, 'setObjectName') == False and hasattr(QObject, 'set_object_name') == False