Passing data out of a Sax parser

Andrew Dalke adalke at mindspring.com
Mon Sep 22 07:29:09 CEST 2003


Me:
> >     if name == "spam":
> >         self.count += 1

John J. Lee:
> Works, but integers aren't mutable.

I assume you refer to the snippet I posted above?

Since it works, I don't understand the need for
your comment.

True, integers aren't mutable, so += does nothing
to the integer.  Since __iadd__ isn't defined, the
Python runtime turns it into the equivalent of

self.count = self.count + 1

and so does what is expected.

                    Andrew
                    dalke at dalkescientific.com






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