On 2015-5-12 18:39, Phoenix wrote:
So is functionally izip exactly the same as zip but faster?
NO.
zip() builds a list, an object that takes up space proportional to the
number of entries.
itertools.izip() makes an iterator: a function that generates the items
that would be in the list, but one by one as needed (see "yield"), never
saving them; the speed advantage is in the absence of memory management.
You can do some listlike things with the output of izip(), but not all;
you can't concatenate it or sort it, for example.
--
*\\* Anton Sherwood *\\* www.bendwavy.org
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