add option to allow errors to be raised when emitting signals

blib/objects.py

@@ -120,12 +120,13 @@ class Signal(list[SignalCallback]):
 			print(f"WARNING: '{cbname}' was not connted to signal '{signame}'")
 
 
-	async def handle_emit(self, *args: Any, **kwargs: Any) -> None:
+	async def handle_emit(self, *args: Any, catch_errors: bool = True, **kwargs: Any) -> None:
 		"""
 			This gets called by :meth:`Signal.emit` as an :class:`asyncio.Task`.
 
 			:param args: Positional arguments to pass to all of the callbacks
 			:param kwargs: Keyword arguments to pass to all of the callbacks
+			:param catch_errors: Whether or not to handle exceptions raised from callbacks
 		"""
 
 		if not self.callback:
@@ -133,10 +134,25 @@ class Signal(list[SignalCallback]):
 			return
 
 		for callback in self:
-			if await self.handle_callback(callback, *args, **kwargs):
+			try:
+				if await self.handle_callback(callback, *args, **kwargs):
+					break
+
+			except Exception:
+				if not catch_errors:
+					raise
+
+				traceback.print_exc()
 				break
 
-		await self.handle_callback(self.callback, *args, **kwargs)
+		try:
+			await self.handle_callback(self.callback, *args, **kwargs)
+
+		except Exception:
+			if not catch_errors:
+				raise
+
+			traceback.print_exc()
 
 
 	async def handle_callback(self,
@@ -157,10 +173,6 @@ class Signal(list[SignalCallback]):
 			print(f"Callback '{callback.__name__}' timed out")
 			return True
 
-		except Exception:
-			traceback.print_exc()
-			return True
-
 
 
 class Object: