-class _MemoryError(_Error):
- """Raised when an operation fails due to memory issues."""
-
-
-class UnknownObject(Exception):
- """
- Raised when a component class handles a query for an object it doesn't
- know about.
- """
-
- pass
-
-
-class _OverflowError(_Error, OverflowError):
- pass
-
-
-class TryAgain(Exception):
- pass
-
-
-class Stop(StopIteration):
- pass
-
-
-class _IncompleteUserClass(Exception):
- pass
-
-