[Python-Dev] Iterating a closed StringIO

[Guido van Rossum]

On 11/17/05, Walter Dörwald <walter at livinglogic.de> wrote:
> Am 17.11.2005 um 22:03 schrieb Guido van Rossum:
>
> > On 11/17/05, Walter Dörwald <walter at livinglogic.de> wrote:
> >> Currently StringIO.StringIO and cStringIO.StringIO behave differently
> >> when iterating a closed stream:
> >>
> >> s = StringIO.StringIO("foo")
> >> s.close()
> >> s.next()
> >>
> >> gives StopIteration, but
> >>
> >> s = cStringIO.StringIO("foo")
> >> s.close()
> >> s.next()
> >>
> >> gives "ValueError: I/O operation on closed file".
> >>
> >> Should they raise the same exception? Should this be fixed for 2.5?
> >
> > I think cStringIO is doing the right thing; "real" files behave the
> > same way.
> >
> > Submit a patch for StringIO (also docs please) and assign it to me and
> > I'll make sure it goes in.
>
> http://www.python.org/sf/1359365

Thanks!

> Doc/lib/libstringio.tex only states "See the description of file
> objects for operations", so I'm not sure how to update the
> documentation.

OK, so that's a no-op.

I hope there isn't anyone here who believes this patch would be a bad idea?

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