Failed to remove handler attached on filtered event

[vfdev-5]

🐛 Bug description

from ignite.engine import Engine, Events

e = Engine(lambda e, b: None)
assert len(e._event_handlers[Events.ITERATION_COMPLETED]) == 0

handle = e.add_event_handler(Events.ITERATION_COMPLETED(every=3), lambda _: print("Hello"))
assert len(e._event_handlers[Events.ITERATION_COMPLETED]) == 1

handle.remove()
assert len(e._event_handlers[Events.ITERATION_COMPLETED]) == 0, e._event_handlers[Events.ITERATION_COMPLETED]

Output:

---------------------------------------------------------------------------
AssertionError                            Traceback (most recent call last)
Input In [8], in <cell line: 11>()
      8 assert len(e._event_handlers[Events.ITERATION_COMPLETED]) == 1
     10 handle.remove()
---> 11 assert len(e._event_handlers[Events.ITERATION_COMPLETED]) == 0, e._event_handlers[Events.ITERATION_COMPLETED]

AssertionError: [(<function <lambda> at 0x132ab23a0>, (<ignite.engine.engine.Engine object at 0x13330ed00>,), {})]
> 

Environment

• PyTorch Version (e.g., 1.4):
• Ignite Version (e.g., 0.3.0): 0.4.9
• OS (e.g., Linux):
• How you installed Ignite (conda, pip, source):
• Python version:
• Any other relevant information:

[sadra-barikbin]

The problem rises when we construct the handle with the wrapping handler but in _compare_handlers we compare it with the parent of registered handlers.

ignite/ignite/engine/engine.py

Lines 307 to 309 in c12ad57

	if isinstance(event_name, CallableEventWithFilter) and event_name.filter is not None:
	event_filter = event_name.filter
	handler = self._handler_wrapper(handler, event_name, event_filter)

ignite/ignite/engine/engine.py

Line 327 in c12ad57

return RemovableEventHandle(event_name, handler, self)

ignite/ignite/engine/engine.py

Lines 351 to 353 in c12ad57

	if hasattr(registered_handler, "_parent"):
	registered_handler = registered_handler._parent() # type: ignore[attr-defined]
	return registered_handler == user_handler