[Tutor] Geometric sequence

[Peter O'Doherty]

To the people who kindly replied to my question: many thanks!


On 10/31/2013 06:29 PM, Danny Yoo wrote:
> As an aside: It shouldn't be too bad to write a "generator" for the 
> geometric series, so that we can pick out the terms on-demand.
>
> #################################
> >>> def geometric(base):
> ...     x = 1
> ...     while True:
> ...         yield x
> ...         x *= base
> ...
> >>> twos = geometric(2)
> #################################
>
>
> 'twos' is a representation of the geometric series; we can then pick 
> out the elements one at a time:
>
>
> #################################
> >>> twos.next()
> 1
> >>> twos.next()
> 2
> >>> twos.next()
> 4
> >>> twos.next()
> 8
> >>> twos.next()
> 16
> >>> twos.next()
> 32
> >>> twos.next()
> 64
> #################################
>
>
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