Raymond Hettinger
6b27cda643
Convert iterator __len__() methods to a private API.
2005-09-24 21:23:05 +00:00
Raymond Hettinger
fdf3bd6630
SF patch #1171417 : bug fix for islice() in docs
2005-03-27 20:11:44 +00:00
Raymond Hettinger
f77d0334f3
Revised the itertools quantifier recipes to match the performance of the
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new builtins.
2005-03-11 22:17:30 +00:00
Raymond Hettinger
b2594050ea
Added optional None arguments to itertools.islice().
2004-12-05 09:25:51 +00:00
Raymond Hettinger
a9f6092904
Fix and test weak referencing of itertools.tee objects.
2004-10-17 16:40:14 +00:00
Raymond Hettinger
ff5dc0ee77
Improve test coverage.
2004-09-29 11:40:50 +00:00
Raymond Hettinger
4cda01e260
* Increase test coverage.
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* Have groupby() be careful about decreffing structure members.
2004-09-28 04:45:28 +00:00
Raymond Hettinger
ffdb8bb99c
Use floor division operator.
2004-09-27 15:29:05 +00:00
Raymond Hettinger
4533f1fb7f
Improve three recipes in the itertools docs.
2004-09-23 07:27:39 +00:00
Tim Peters
beb7c0c434
test_sf_950057's gen1() used an assert statement, which caused the test
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to fail when running with -O. Changed to raise AssertionError instead.
2004-07-18 17:34:03 +00:00
Raymond Hettinger
9d7c870c6d
SF #950057 : itertools.chain doesn't "process" exceptions as they occur
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Both cycle() and chain() were handling exceptions only when switching
input sources. The patch makes the handle more immediate.
Will backport.
2004-05-08 19:49:42 +00:00
Raymond Hettinger
5cab2e3a88
Give itertools.repeat() a length method.
2004-02-10 09:25:40 +00:00
Raymond Hettinger
734fb5724f
Add a Guido inspired example for groupby().
2004-01-20 20:04:40 +00:00
Raymond Hettinger
64958a15d7
Guido grants a Christmas wish:
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sorted() becomes a regular function instead of a classmethod.
2003-12-17 20:43:33 +00:00
Raymond Hettinger
d25c1c6351
Implement itertools.groupby()
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Original idea by Guido van Rossum.
Idea for skipable inner iterators by Raymond Hettinger.
Idea for argument order and identity function default by Alex Martelli.
Implementation by Hye-Shik Chang (with tweaks by Raymond Hettinger).
2003-12-06 16:23:06 +00:00
Raymond Hettinger
ad983e79d6
Improve the implementation of itertools.tee().
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Formerly, underlying queue was implemented in terms of two lists. The
new queue is a series of singly-linked fixed length lists.
The new implementation runs much faster, supports multi-way tees, and
allows tees of tees without additional memory costs.
The root ideas for this structure were contributed by Andrew Koenig
and Guido van Rossum.
2003-11-12 14:32:26 +00:00
Raymond Hettinger
d591f666de
Replace the window() example with pairwise() which demonstrates tee().
2003-10-26 15:34:50 +00:00
Raymond Hettinger
f0c5aec85f
Minor improvements to itertools.tee():
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* tee object is no longer subclassable
* independent iterators renamed to "itertools.tee_iterator"
* fixed doc string typo and added entry in the module doc string
2003-10-26 14:25:56 +00:00
Raymond Hettinger
6a5b027742
Added itertools.tee()
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It works like the pure python verion except:
* it stops storing data after of the iterators gets deallocated
* the data queue is implemented with two stacks instead of one dictionary.
2003-10-24 08:45:23 +00:00
Raymond Hettinger
dbe3d280e7
Adopt Christian Stork's suggested argument order for the logic quantifiers.
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Adopt Jeremy Fincher's suggested function name, "any", instead of "some".
2003-10-05 16:47:36 +00:00
Raymond Hettinger
42a61ed277
Simplify doctest of tee().
2003-09-13 01:01:34 +00:00
Raymond Hettinger
a098b33c93
Add an example to address a common question of how to split iterators.
2003-09-08 23:58:40 +00:00
Raymond Hettinger
a56f6b6600
SF bug #793826 : using itertools.izip to mutate tuples
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Avoid Armin Rigo's dastardly exercise in re-entrancy.
2003-08-29 23:09:58 +00:00
Raymond Hettinger
b5a420883c
Modified itertools.izip() to match the behavior of __builtin__.zip()
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which can now take zero arguments.
2003-08-08 05:10:41 +00:00
Raymond Hettinger
77fe69bd08
Re-sync doc tests with the doc updates.
2003-08-08 04:33:19 +00:00
