bombaci-vsc

I don't know why the garbage collection would set the `BaseReader` reference to `None`. If you replace `BaseReader.close(self)` with `super().close()`, does the error go away?

Unfortunately python does not guarantee that `__del__` methods will work during shutdown. See the second bullet of the warning on [`__del__`’s documentation](https://docs.python.org/3/reference/datamodel.html#object.__del__)  Unfortunately, I don’t think it is practical...

Included in version 1.3.59