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89 commits

Author SHA1 Message Date
Raymond Hettinger
fdf1b5642b Minor factoring 2010-04-11 20:39:28 +00:00
Raymond Hettinger
34c35b2788 Add subtract() method to collections.Counter() objects. 2010-04-03 10:22:00 +00:00
Raymond Hettinger
dd2fedcd1c Factor-out constant expressions 2010-04-03 07:57:09 +00:00
Raymond Hettinger
6b96ecb0ab Improve clear() method. Keeps key/value refcnts >= 1 until final dict.clear() so that decrefs to zero won't trigger arbitrary code . Also runs a bit faster. 2010-04-03 03:14:28 +00:00
Raymond Hettinger
3928276e64 Clear cyclical references in list based OrderedDict. 2010-04-03 00:39:26 +00:00
Raymond Hettinger
e30bc38ce9 Improve code clarity a bit. 2010-03-09 11:29:10 +00:00
Raymond Hettinger
aba2293862 Have links in OrderedDicts be native Python lists instead 
of a custom class with __slots__.  This simplifies the
code a bit, reduces memory consumption, improves speed,
and eliminates the need for weak reference proxies.
 2010-03-09 09:58:53 +00:00
Raymond Hettinger
9bd3508530 Add nicer docstrings to namedtuples(). 
Provides better tooltips and looks better in help().
 2010-03-09 09:01:46 +00:00
Georg Brandl
7d4b759bd9 Remove unused import. 2010-02-06 22:49:47 +00:00
Raymond Hettinger
5dfc7f9fc8 Issue 6370: Performance issue with collections.Counter(). 2009-06-29 19:10:29 +00:00
Alexandre Vassalotti
cb73bdac95 Revert r73401 per Raymond Hettinger's request. 
The rational is the change might cause imcompatiblity problems with
PyYAML. In addition, Raymond wants to kept the different versions of
collections synchronized across Python versions.
 2009-06-12 23:03:35 +00:00
Alexandre Vassalotti
450ae573bc Make pickling of OrderedDict instances more efficient. 2009-06-12 21:52:14 +00:00
Raymond Hettinger
a68cad13ae Fix field name conflicts for named tuples. 2009-05-27 02:24:45 +00:00
Benjamin Peterson
7c67b03051 using sys._getframe(x), where x > 0 doesnt' work on IronPython 2009-05-05 00:55:24 +00:00
Raymond Hettinger
1355a3dbf6 Minor factoring. 2009-04-08 08:26:55 +00:00
Raymond Hettinger
a5cd6375c0 Add docstrings. 2009-04-08 05:39:38 +00:00
Raymond Hettinger
e3bc5577e8 Replace the localized min/max calls with normal if/else 2009-04-04 08:46:58 +00:00
Raymond Hettinger
756ab67a98 Have namedtuple's field renamer assign names that 
are consistent with the corresponding tuple index.
 2009-04-02 22:25:40 +00:00
Raymond Hettinger
2dc90fdfaf Separate initialization from clearing. 2009-03-25 22:41:32 +00:00
Raymond Hettinger
e5b78563b6 Make imported name private and wrap long-line. 2009-03-23 18:26:59 +00:00
Raymond Hettinger
906f95e80b Move initialization of root link to __init__. 2009-03-23 04:42:18 +00:00
Raymond Hettinger
f1e2df9780 Add more comments. Improve variable names. 
Make links clearer by using a Link object
instead of a list.  Use proxy links to avoid
circular references.
 2009-03-23 00:08:09 +00:00
Raymond Hettinger
c8e81ef508 Fix typo 2009-03-19 23:22:25 +00:00
Raymond Hettinger
e980d2d44b * Add implementation notes. 
* Re-order methods so that those touching the underlying data
  structure come first and the derived methods come last.
 2009-03-19 23:12:41 +00:00
Raymond Hettinger
2412299be9 * Add clearer comment to initialization code. 
* Add optional argument to popitem() -- modeled
  after Anthon van der Neut's C version.
* Fix method markup in docs.
 2009-03-19 19:59:58 +00:00
Raymond Hettinger
2124599eaa Improve implementation with better underlying data structure 
for O(1) deletions.  Big-Oh performance now the same as regular
dictionaries.  Uses a doubly-linked list instead of a list/seq
to track insertion order.
 2009-03-19 15:21:10 +00:00
Raymond Hettinger
a61ae6922f Use mixin methods where possible. (2.7 only -- these don't all exist in 3.0) 2009-03-18 22:13:20 +00:00
Raymond Hettinger
131af6505a Backport 70140, 70141, 70143, and 70144. 
Adds tests, switches from list to deque, fixes __reduce__
which was unnecessarily copying __keys.
 2009-03-03 22:59:25 +00:00
Raymond Hettinger
0b15541ae2 Minor simplification. 2009-03-03 21:13:51 +00:00
Raymond Hettinger
9353ea2b85 Make the underlying data structure more private. 2009-03-03 20:53:51 +00:00
Raymond Hettinger
88a9164cdb Backport 70106: Add OrderedDict support to collections.namedtuple(). 2009-03-03 04:51:24 +00:00
Raymond Hettinger
bc512d3abd Backport PEP 372: OrderedDict() 2009-03-03 04:45:34 +00:00
Raymond Hettinger
322daea7c3 Issue 1818: collections.namedtuple() to support automatic renaming of invalid fieldnames. 2009-02-10 01:24:05 +00:00
Raymond Hettinger
ecf252abac Issue 5021: doctest.testfile should set __name__ 2009-01-27 10:03:04 +00:00
Raymond Hettinger
1bc1c8ac76 Update comments and add an optimized path for Counter.update(). 2009-01-22 09:05:43 +00:00
Raymond Hettinger
4571f347f9 Simplify explanation of multiset operations by removing restrictions on negative inputs. 2009-01-21 20:31:50 +00:00
Raymond Hettinger
ae3f068fb5 Make merging easier by formattng comment blocks the same in Py3.1 2009-01-20 03:36:36 +00:00
Raymond Hettinger
562a4ada56 Add Counter() to __all__. 2009-01-20 02:24:38 +00:00
Raymond Hettinger
bad1eb2ff3 Build-outs for Counter() class: 
* Constructor and update() support keyword args (like their dict counterparts).
* The 'del' statement no longer raises KeyError for missing values.
* Add multiset operations:  __add__, __sub__, __and__, __or__.
 2009-01-20 01:19:26 +00:00
Raymond Hettinger
35288c6b6c Speed-up __repr__. Eliminate duplicate tests. Use a from-irmport. 2009-01-13 04:50:35 +00:00
Raymond Hettinger
783d73fc2f Fixup and simplify docstrings and doctests. 2009-01-13 04:13:53 +00:00
Raymond Hettinger
aaa6e630f8 Simplify Counter() API. Replace items keyword argument 
with a mapping.  Makes Counter() idempotent, makes update()
API the same as Counter.__init__(), makes a more readable
repr, makes the API more dict-like, and allows Steven
Bethard's update() example to work.
 2009-01-13 01:05:03 +00:00
Raymond Hettinger
f94d7fa5fb Issue 1696199: Add collections.Counter(). 2009-01-12 22:58:41 +00:00
Raymond Hettinger
6ee7bc04f7 Fix namedtuple bug reported by Glenn Linderman. Template did not form correctly if the field names were input in Unicode. 2008-09-25 23:31:52 +00:00
Raymond Hettinger
e98839a1f4 Issue3065: Fixed pickling of named tuples. Added tests. 2008-06-09 01:28:30 +00:00
Raymond Hettinger
3c2523c2eb Issue 2903: Add __name__ in globals for namedtuple namespace. 2008-05-30 07:16:53 +00:00
Raymond Hettinger
15b5e55b48 Neaten-up the named tuple docs 2008-01-10 23:00:01 +00:00
Raymond Hettinger
e850c466c7 Clarify how to add a field to a named tuple. 2008-01-10 20:37:12 +00:00
Raymond Hettinger
e1655088ca Examples for named tuple subclassing should include __slots__ 2008-01-10 19:15:10 +00:00
Raymond Hettinger
581671419f Expand comment. 2008-01-08 02:02:05 +00:00