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From: Zachary Ware <zachary.ware+pylist@gmail.com>
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On Fri, Aug 29, 2014 at 8:41 PM, Terry Reedy <tjreedy@udel.edu> wrote:
> On 8/29/2014 4:40 PM, Seymore4Head wrote:
>> older versions of python would allow ? as help.
>
> If I ever knew that, I have forgotten.  The interpreter must have treated
> '?' as a special case for interactive input. I suspect help was changed when
> quit and exit were added.

I don't believe '?' has ever been a feature of Python itself.
However, IPython does use '?' as a syntax for help; you can try it
with the in-browser interpreter at python.org.

-- 
Zach