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Problem : Generator


Woww.. This solves the problem..
Thank you very much

On Sat, 16 Feb 2019, 12:54 Avi Gross <avigross at verizon.net wrote:

> Just want to point out you can make any function into a generator by having
> a yield statement like this:
>
> >>> def previous(listing):
>         while listing: yield listing.pop()
>
>
> >>> for num in previous([1,2,3,4]): print(num)
>
> 4
> 3
> 2
> 1
>
> The above is an EXAMPLE, not a particularly great way to do this. The point
> is if you have an iterable you want to do reversed, you could do it without
> an explicit reversal. Variations on the above that do not alter the list
> would be to use an index based on the length of the list and count backward
> as you return what is at that index.
>
> -----Original Message-----
> From: Python-list <python-list-bounces+avigross=verizon.net at python.org> On
> Behalf Of dieter
> Sent: Saturday, February 16, 2019 1:47 AM
> To: python-list at python.org
> Subject: Re: Problem : Generator
>
> Prahallad Achar <acharbly at gmail.com> writes:
>
> > I get list object instead gen  obj
>
> If you have a list "l" and want a generator, you can use
>    ( x for x in l)
> or simpler "iter(l)" - which gives you an interator over "l".
>
> An "iterator" is slightly more general than a generator (every generator is
> also an iterator).
>
>
>
>
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