[Python-Dev] thoughts on having EOFError inherit from EnvironmentError?

Guido van Rossum guido at python.org
Wed Apr 16 00:36:39 CEST 2008

On Tue, Apr 15, 2008 at 3:27 PM, Greg Ewing <greg.ewing at canterbury.ac.nz> wrote:
> Guido van Rossum wrote:
>  > No, that's some kind of parsing error. EnvironmentError doesn't
>  > concern itself with the contents of files.
>  Often I raise EnvironmentErrors of my own to signal
>  parsing errors. This makes it easy to wrap everything
>  in a try-except that catches anything that's the user's
>  fault rather than the program's.

Well, that's your problem. That's not what EnvironmentErrors are for.

>  > But what operations raise EOFError? Surely you're not using
>  > raw_input()? It's really only there for teaching.
>  I'm fairly sure there are some others, although I
>  can't point to them on the spur of the moment.
>  However, thinking about it a bit more, anything that
>  calls something that can raise EOFError should be
>  catching it anyway, so an escaped EOFError represents
>  a program bug. So it's probably okay.


--Guido van Rossum (home page: http://www.python.org/~guido/)

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