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Showing content from http://mail.python.org/pipermail/python-dev/2000-August/008628.html below:

[Python-Dev] iterators

[Python-Dev] iterators [Python-Dev] iteratorsFredrik Lundh fredrik@pythonware.com
Mon, 21 Aug 2000 12:43:47 +0200
mal wrote:
> How about a third variant:
> 
> #3:
> __iter = <object>.iterator()
> while __iter:
>    <variable> = __iter.next()
>    <block>

how does that one terminate?

maybe you meant something like:

    __iter = <object>.iterator()
    while __iter:
        <variable> = __iter.next()
        if <variable> is <sentinel>:
            break
        <block>

(where <sentinel> could be __iter itself...)

</F>




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