Python 'for' loop is memory inefficient
Hendrik van Rooyen
hendrik at microcorp.co.za
Sat Aug 15 11:21:12 CEST 2009
On Saturday 15 August 2009 03:25:45 Dr. Phillip M. Feldman wrote:
> It seems as though Python is actually expanding range(2,n) into a list of
> numbers, even though this is incredibly wasteful of memory. There should be
> a looping mechanism that generates the index variable values incrementally
> as they are needed.
Use xrange instead of range, and try again.
And while you are about it, you may as well teach them that it is much better
to do a multiplication than a division.
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