44e1581df3
Issue #4615 . Document how to use itertools for de-duping.
2009-01-02 21:26:45 +00:00
f080e6d7e0
Alter recipe to show how to call izip_longest() with
...
both a keyword argument and star arguments.
2008-07-31 01:19:50 +00:00
efdf706a9f
Neaten-up the itertools recipes.
2008-07-30 07:27:30 +00:00
f1f46f0350
Clean-up itertools docs and recipes.
2008-07-19 23:58:47 +00:00
39e0eb766f
Fix compress() recipe in docs to use itertools.
2008-07-19 23:21:57 +00:00
3369167089
Add recipe to the itertools docs.
2008-07-19 00:43:00 +00:00
e70bb8d6f2
Simplify demo code.
2008-03-23 00:55:46 +00:00
e8b4b60555
Add recipe to docs.
2008-03-11 00:19:07 +00:00
38fb9bee6c
Tweak recipes and tests
2008-03-07 01:33:20 +00:00
a1ca94a102
Issue 2246: itertools grouper object did not participate in GC (should be backported).
2008-03-06 22:51:36 +00:00
ad47fa141c
More tests.
2008-03-06 20:52:01 +00:00
66f91ea966
C implementation of itertools.permutations().
2008-03-05 20:59:58 +00:00
d553d856e7
Beef-up docs and tests for itertools. Fix-up end-case for product().
2008-03-04 04:17:08 +00:00
08ff6822cc
Handle the repeat keyword argument for itertools.product().
2008-02-29 02:21:48 +00:00
b4cbc98c39
Add alternate constructor for itertools.chain().
2008-02-28 22:46:41 +00:00
05bf6338b8
Have itertools.chain() consume its inputs lazily instead of building a tuple of iterators at the outset.
2008-02-28 22:30:42 +00:00
2ab0552b5e
Larger test range
2008-02-27 01:08:30 +00:00
93e804da9c
Add itertools.combinations().
2008-02-26 23:40:50 +00:00
9d63837e9b
Make sure the itertools filter functions give the same performance for func=bool as func=None.
2008-02-25 22:42:32 +00:00
73d7963242
Improve the implementation of itertools.product()
...
* Fix-up issues pointed-out by Neal Norwitz.
* Add extensive comments.
* The lz->result variable is now a tuple instead of a list.
* Use fast macro getitem/setitem calls so most code is in-line.
* Re-use the result tuple if available (modify in-place instead of copy).
2008-02-23 02:20:41 +00:00
50986cc45b
First draft for itertools.product(). Docs and other updates forthcoming.
2008-02-22 03:16:42 +00:00
473170908e
Make starmap() match its pure python definition and accept any itertable input (not just tuples).
2008-01-17 03:02:14 +00:00
3a0de08d54
Fix test of count.__repr__() to ignore the 'L' if the count is a long
2007-10-12 17:53:11 +00:00
50e90e265f
itertools.count() no longer limited to sys.maxint.
2007-10-04 00:20:27 +00:00
170eee9d6a
Fix those parts in the testsuite that assumed that sys.maxint would cause overflow on x64. Now the testsuite is well behaved on that platform.
2007-05-03 20:09:56 +00:00
ea5962f86e
Whitespace normalization.
2007-03-12 18:07:52 +00:00
d36862cf78
Add itertools.izip_longest().
2007-02-21 05:20:38 +00:00
6d121f168c
Do not let overflows in enumerate() and count() pass silently.
2007-02-08 00:07:32 +00:00
b84c13792d
Bug #1486663 : don't reject keyword arguments for subclasses of builtin
...
types.
2007-01-21 10:28:43 +00:00
36234e8f66
* regression bug, count_next was coercing a Py_ssize_t to an unsigned Py_size_t
...
which breaks negative counts
* added test for negative numbers
will backport to 2.5.1
2006-09-21 17:50:26 +00:00
69e8897505
Bug #1550714 : fix SystemError from itertools.tee on negative value for n.
...
Needs backport to 2.5.1 and earlier.
2006-09-02 02:58:13 +00:00
a3f092751a
("Forward-port" of r46506)
...
Remove various dependencies on dictionary order in the standard library
tests, and one (clearly an oversight, potentially critical) in the
standard library itself - base64.py.
Remaining open issues:
* test_extcall is an output test, messy to make robust
* tarfile.py has a potential bug here, but I'm not familiar
enough with this code. Filed in as SF bug #1496501 .
* urllib2.HTTPPasswordMgr() returns a random result if there is more
than one matching root path. I'm asking python-dev for
clarification...
2006-05-28 19:13:17 +00:00
6b27cda643
Convert iterator __len__() methods to a private API.
2005-09-24 21:23:05 +00:00
fdf3bd6630
SF patch #1171417 : bug fix for islice() in docs
2005-03-27 20:11:44 +00:00
f77d0334f3
Revised the itertools quantifier recipes to match the performance of the
...
new builtins.
2005-03-11 22:17:30 +00:00
b2594050ea
Added optional None arguments to itertools.islice().
2004-12-05 09:25:51 +00:00
a9f6092904
Fix and test weak referencing of itertools.tee objects.
2004-10-17 16:40:14 +00:00
ff5dc0ee77
Improve test coverage.
2004-09-29 11:40:50 +00:00
4cda01e260
* Increase test coverage.
...
* Have groupby() be careful about decreffing structure members.
2004-09-28 04:45:28 +00:00
ffdb8bb99c
Use floor division operator.
2004-09-27 15:29:05 +00:00
4533f1fb7f
Improve three recipes in the itertools docs.
2004-09-23 07:27:39 +00:00
beb7c0c434
test_sf_950057's gen1() used an assert statement, which caused the test
...
to fail when running with -O. Changed to raise AssertionError instead.
2004-07-18 17:34:03 +00:00
9d7c870c6d
SF #950057 : itertools.chain doesn't "process" exceptions as they occur
...
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
5cab2e3a88
Give itertools.repeat() a length method.
2004-02-10 09:25:40 +00:00
734fb5724f
Add a Guido inspired example for groupby().
2004-01-20 20:04:40 +00:00
64958a15d7
Guido grants a Christmas wish:
...
sorted() becomes a regular function instead of a classmethod.
2003-12-17 20:43:33 +00:00
d25c1c6351
Implement itertools.groupby()
...
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
ad983e79d6
Improve the implementation of itertools.tee().
...
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
d591f666de
Replace the window() example with pairwise() which demonstrates tee().
2003-10-26 15:34:50 +00:00
f0c5aec85f
Minor improvements to itertools.tee():
...
* 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
Kristján Valur Jónsson
Tim Peters
Georg Brandl
Jack Diederich
Neal Norwitz
Armin Rigo