flebber.crue at gmail.com
Wed Apr 3 21:03:16 EDT 2019
On Thursday, 4 April 2019 10:51:35 UTC+11, Paul Rubin wrote:
> Sayth Renshaw writes:
> > for x in range ( max_root ):
> > 1) Do you see a memory bottleneck here? If so, what is it?
> > 2) Can you think of a way to fix the memory bottleneck?
> In Python 2, range(n) creates a list in memory. To make an iterator you
> would use xrange instead of range. In Python 3, range(n) is an iterator.
> Either way, fetch_squares creates a list of squares and not an iterator.
> > for square in fetch_squares (MAX ):
> > do_something_with ( square )
> Here's you're creating that list and throwing it away. So you have the
> right idea with:
> def supply_squares(max_root):
> for x in max_root:
> yield x
> But supply_squares returns a generator which means you have to iterate
> through it.
> will print something like
> <generator object supply_squares at 0x0000000004DEAC00>
> which is what you saw. You want:
> for square in supply_squares(MAX):
> print square
Ah thanks for your help. Happy I identified the correct bottleneck too.
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