Why tuple with one item is no tuple

Tim Roberts timr at probo.com
Wed Mar 16 08:54:35 CET 2005


Gregor Horvath <g.horvath at mx.at> wrote:
>
> >>>type(['1'])
><type 'list'>
>
> >>>type(('1'))
><type 'str'>
>
>I wonder why ('1') is no tuple????

There were lots of answers, but I'm not sure I saw the "why" addressed.

Consider this:

    a = (3 + 5) * 5

You really, really want (3 + 5) to be an integer, not a one-item tuple.
-- 
- Tim Roberts, timr at probo.com
  Providenza & Boekelheide, Inc.



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