chore: move CancelledError and InvalidStateError to tasks

Author: imnotjames

asyncio/core.py

@@ -24,17 +24,17 @@
 except:
     from .task import TaskQueue, Task
 
+# Depending on the version of CircuitPython, these errors may exist in the build-in C code
+# even if _asyncio exists
+try:
+    from _asyncio import CancelledError, InvalidStateError
+except:
+    from .task import CancelledError, InvalidStateError
 
 ################################################################################
 # Exceptions
 
 
-class CancelledError(BaseException):
-    """Injected into a task when calling `Task.cancel()`"""
-
-    pass
-
-
 class TimeoutError(Exception):
     """Raised when waiting for a task longer than the specified timeout."""
 

asyncio/task.py

@@ -21,6 +21,18 @@
 from . import core
 
 
+class CancelledError(BaseException):
+    """Injected into a task when calling `Task.cancel()`"""
+
+    pass
+
+
+class InvalidStateError(Exception):
+    """Can be raised in situations like setting a result value for a task object that already has a result value set."""
+
+    pass
+
+
 # pairing-heap meld of 2 heaps; O(1)
 def ph_meld(h1, h2):
     if h1 is None: