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Mon Apr 21 06:33:25 CEST 2008 · https://mail.python.org/pipermail/python-dev/2008-April/078772.html

On Sat, Apr 19, 2008 at 6:03 PM, Nick Coghlan <ncoghlan at gmail.com> wrote:
>  To suggest yet another colour for the bikeshed, maybe we should ditch
>  both unindexable and unsubscriptable and go with "'int' is not a
>  sequence or mapping". Any object which supports subscript notation will
>  be one or the other.

I wouldn't bet my life on that. __getitem__ overloading for all sorts
of nefarious purposes has quite a following. I'd prefer a message that
doesn't get into what x "is" but sticks to the point at hand, which is
that it doesn't support __getitem__.

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

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[Python-Dev] unscriptable?