tuple.index()

[greg]

Nick Maclaren wrote:

>     It does explain why you think of lists as homogeneous, but the
> analogy doesn't hold water on closer inspection.  There doesn't seem
> to be ANYTHING in the specification or implementation that assumes
> lists are homogeneous.

Then what do you think is suggested by the fact
that lists have an index() method but tuples don't?

That's how this whole discussion got started --
someone wanted an explanation of why that is so.
The explanation is that tuples and lists were
designed for different use cases.

You don't *have* to use them that way, but if
you use them differently, you're on your own
and can't complain if they don't have all the
features you want.

--
Greg