[Python-Dev] Py3k: Except clause syntax

[Brett Cannon]

On 3/17/06, Georg Brandl <g.brandl at gmx.net> wrote:
> John J Lee wrote:
>
> >> In your formulation the comma binds more tightly than the as keyword.
> >> In import statements it's the other way around.  That seems like it
> >> might be a source of confusion.
> >
> > Perhaps parentheses around the exception list should be mandatory for the
> > 2-or-more exceptions case?
> >
> > except NameError as e:                  --> fine
> > except (NameError) as e:                --> fine
> > except (NameError,) as e:               --> fine
> >
> > except NameError, OtherError as e:      --> SyntaxError
> > except (NameError, OtherError) as e:    --> fine
>
> I don't like that particularly, but I guess that for consistency's sake
> it would have to be done this way.
>

I don't like it period.  What consistency problem is there?  This is
Python 3 we are talking about, so if something makes good sense such
as not having parentheses, I say leave them off.  There are multiple
places where parens could be required but are not, like multiple
assignment.

-Brett