1. But, Python has exceptions! The underlying C language doesn't, but Python's run-time has them and can use them in the C code. 2. It may be an argument for e

1. But, Python has exceptions! The underlying C language doesn't, but Python's run-time has them and can use them in the C code. 2. It may be an argument for ensuring that absolutely everything that is an object can hash: the object hasher must not have error states. Nobody wants the overhead of a simple hash code being wrapped in a result type.