Python Exception Types

[polm]

I noticed that if input is too long in Python an Exception is thrown, but it's a plain Exception, not a ValueError or something. I see in the Rust code there are a variety of specific error types.

I'm not familiar with Rust, but surely it's possible to have the Python code throw something more specific like a InputTooLongException?

[eiennohito]

We will try to use better exception types later