xrange question

[Paul Prescod]

John Flynn wrote:
> 
>...
> 
> Firstly, I can't see how 'xrange' does anything that can't be done more
> efficiently with 'while'. I think xrange must have a purpose I'm not seeing.

xrange gives you a simple way to do a for-loop over a large array. You
could do a while instead but you can always replace for-loops with while
loops. But for-loops are usually clearer than while-loops because the
one statement does variable declaration, initialization and iteration.

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