[Tutor] __getitem__

[Christopher Spears]

Sorry!

X = stepper()
X.data = "Spam"

--- bob <bgailer at alum.rpi.edu> wrote:

> At 12:12 PM 1/16/2006, Christopher Spears wrote:
> >I understand that you can use __getitem__ as a hook
> to
> >modify indexing behavoir in a class.  That's why
> >__getitem__ not only affects [] but also for loops,
> >map calls, list comprehension, etc.  For loops,
> etc.
> >work by indexing a  sequences from zero to a higher
> >index until out-of-bounds is reached.  But why does
> >this work?
> >
> > >>> class stepper:
> >...     def __getitem__(self, i):
> >...         return self.data[i]
> >...
> > >>> 'p' in X
> >True
> >
> >What does 'in' have to do with indexing?
> 
> What does X have to do with stepper? 
> 
> 


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