revert: #1945 (#2103)

* Revert "feat!: Client.on_error() improvement with new parameter (#1945)"

This reverts commit 7f192fe.

* chore: remove changelog entry of reverted pr

Author: plun1331

CHANGELOG.md

@@ -82,8 +82,6 @@ These changes are available on the `master` branch, but have not yet been releas
   ([#2063](https://github.com/Pycord-Development/pycord/pull/2063))
 - `default_avatar` behavior changes depending on the user's username migration status.
   ([#2087](https://github.com/Pycord-Development/pycord/pull/2087))
-- `Client.on_error()` now has an `exception` parameter for easier error handling.
-  ([#1945](https://github.com/Pycord-Development/pycord/pull/1945))
 - Typehinted `command_prefix` and `help_command` arguments properly.
   ([#2099](https://github.com/Pycord-Development/pycord/pull/2099))
 

discord/client.py

@@ -399,9 +399,9 @@ async def _run_event(
             await coro(*args, **kwargs)
         except asyncio.CancelledError:
             pass
-        except Exception as exc:
+        except Exception:
             try:
-                await self.on_error(event_name, exc, *args, **kwargs)
+                await self.on_error(event_name, *args, **kwargs)
             except asyncio.CancelledError:
                 pass
 
@@ -481,9 +481,7 @@ def dispatch(self, event: str, *args: Any, **kwargs: Any) -> None:
         for coro in once_listeners:
             self._event_handlers[method].remove(coro)
 
-    async def on_error(
-        self, event_method: str, exception: Exception, *args: Any, **kwargs: Any
-    ) -> None:
+    async def on_error(self, event_method: str, *args: Any, **kwargs: Any) -> None:
         """|coro|
 
         The default error handler provided by the client.

docs/api/events.rst

@@ -252,14 +252,17 @@ Channels
 
 Connection
 ----------
-.. function:: on_error(event, exception, *args, **kwargs)
+.. function:: on_error(event, *args, **kwargs)
 
     Usually when an event raises an uncaught exception, a traceback is
     printed to stderr and the exception is ignored. If you want to
     change this behaviour and handle the exception for whatever reason
     yourself, this event can be overridden. Which, when done, will
     suppress the default action of printing the traceback.
 
+    The information of the exception raised and the exception itself can
+    be retrieved with a standard call to :func:`sys.exc_info`.
+
     If you want exception to propagate out of the :class:`Client` class
     you can define an ``on_error`` handler consisting of a single empty
     :ref:`raise statement <py:raise>`. Exceptions raised by ``on_error`` will not be
@@ -276,9 +279,6 @@ Connection
     :param event: The name of the event that raised the exception.
     :type event: :class:`str`
 
-    :param exception: The exception raised by the event.
-    :type event: :class:`Exception`
-
     :param args: The positional arguments for the event that raised the
         exception.
     :param kwargs: The keyword arguments for the event that raised the