[Patches] [ python-Patches-774414 ] Add a stream type and a merge type to itertoolsmodule.c

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Patches item #774414, was opened at 2003-07-19 19:53
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Category: Modules
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Ben Wolfson (rumjuggler)
Assigned to: Nobody/Anonymous (nobody)
Summary: Add a stream type and a merge type to itertoolsmodule.c

Initial Comment:
This patch adds a stream type to itertoolsmodule.c,
which provides a way to cache results from a generator.
 This is useful if you want to iterate over the
generator more than once.  It also lets potentially
infinite generators simulate lists/tuples;
stream(some_generator())[10] produces the first 11
values from the generator and returns the last one, but
doesn't produce any more.

The other type added is useable to merge the output of
two (sorted) iterables into one iterable.

I assume documentation would also need to be updated if
this patch gets accepted, but since I imagine that
won't be an open-and-shut case I haven't written any yet.

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