Tuple Question

[VanL]

Hello,

Why is this?
[color=blue][color=green][color=darkred]
>>> class MyTuple(tuple):[/color][/color][/color]
.... def __getitem__(sel f, name):
.... return tuple.__getitem __(self, name)
....[color=blue][color=green][color=darkred]
>>> data = (1,2,3,4,5)
>>> t = MyTuple(data)
>>> t[0][/color][/color][/color]
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "<stdin>", line 3, in __getitem__
TypeError: descriptor '__getitem__' requires a 'tuple' object but
received a 'int'

Thanks,

VL

[Steven Bethard]

Re: Tuple Question

VanL wrote:[color=blue]
> Why is this?
>[color=green][color=darkred]
> >>> class MyTuple(tuple):[/color][/color]
> ... def __getitem__(sel f, name):
> ... return tuple.__getitem __(self, name)
> ...[color=green][color=darkred]
> >>> data = (1,2,3,4,5)
> >>> t = MyTuple(data)
> >>> t[0][/color][/color]
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> File "<stdin>", line 3, in __getitem__
> TypeError: descriptor '__getitem__' requires a 'tuple' object but
> received a 'int'[/color]

What Python are you using? On Python 2.4:
[color=blue][color=green][color=darkred]
>>> class MyTuple(tuple):[/color][/color][/color]
.... def __getitem__(sel f, name):
.... return tuple.__getitem __(self, name)
....[color=blue][color=green][color=darkred]
>>> data = (1,2,3,4,5)
>>> t = MyTuple(data)
>>> t[0][/color][/color][/color]
1

Steve

[Lonnie Princehouse]

Re: Tuple Question

> Why is this?
It should work. Are you using an old version of Python?