2004-04-19 16:06:21 -03:00
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# -*- coding: Latin-1 -*-
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"""Heap queue algorithm (a.k.a. priority queue).
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Heaps are arrays for which a[k] <= a[2*k+1] and a[k] <= a[2*k+2] for
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all k, counting elements from 0. For the sake of comparison,
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non-existing elements are considered to be infinite. The interesting
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property of a heap is that a[0] is always its smallest element.
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Usage:
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heap = [] # creates an empty heap
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heappush(heap, item) # pushes a new item on the heap
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item = heappop(heap) # pops the smallest item from the heap
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item = heap[0] # smallest item on the heap without popping it
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heapify(x) # transforms list into a heap, in-place, in linear time
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item = heapreplace(heap, item) # pops and returns smallest item, and adds
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# new item; the heap size is unchanged
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Our API differs from textbook heap algorithms as follows:
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- We use 0-based indexing. This makes the relationship between the
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index for a node and the indexes for its children slightly less
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obvious, but is more suitable since Python uses 0-based indexing.
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- Our heappop() method returns the smallest item, not the largest.
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These two make it possible to view the heap as a regular Python list
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without surprises: heap[0] is the smallest item, and heap.sort()
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maintains the heap invariant!
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"""
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2004-06-10 02:03:17 -03:00
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# Original code by Kevin O'Connor, augmented by Tim Peters and Raymond Hettinger
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2004-04-19 16:06:21 -03:00
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__about__ = """Heap queues
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[explanation by Fran<EFBFBD>ois Pinard]
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Heaps are arrays for which a[k] <= a[2*k+1] and a[k] <= a[2*k+2] for
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all k, counting elements from 0. For the sake of comparison,
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non-existing elements are considered to be infinite. The interesting
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property of a heap is that a[0] is always its smallest element.
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The strange invariant above is meant to be an efficient memory
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representation for a tournament. The numbers below are `k', not a[k]:
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0
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1 2
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3 4 5 6
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7 8 9 10 11 12 13 14
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15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
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In the tree above, each cell `k' is topping `2*k+1' and `2*k+2'. In
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an usual binary tournament we see in sports, each cell is the winner
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over the two cells it tops, and we can trace the winner down the tree
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to see all opponents s/he had. However, in many computer applications
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of such tournaments, we do not need to trace the history of a winner.
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To be more memory efficient, when a winner is promoted, we try to
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replace it by something else at a lower level, and the rule becomes
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that a cell and the two cells it tops contain three different items,
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but the top cell "wins" over the two topped cells.
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If this heap invariant is protected at all time, index 0 is clearly
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the overall winner. The simplest algorithmic way to remove it and
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find the "next" winner is to move some loser (let's say cell 30 in the
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diagram above) into the 0 position, and then percolate this new 0 down
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the tree, exchanging values, until the invariant is re-established.
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This is clearly logarithmic on the total number of items in the tree.
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By iterating over all items, you get an O(n ln n) sort.
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A nice feature of this sort is that you can efficiently insert new
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items while the sort is going on, provided that the inserted items are
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not "better" than the last 0'th element you extracted. This is
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especially useful in simulation contexts, where the tree holds all
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incoming events, and the "win" condition means the smallest scheduled
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time. When an event schedule other events for execution, they are
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scheduled into the future, so they can easily go into the heap. So, a
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heap is a good structure for implementing schedulers (this is what I
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used for my MIDI sequencer :-).
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Various structures for implementing schedulers have been extensively
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studied, and heaps are good for this, as they are reasonably speedy,
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the speed is almost constant, and the worst case is not much different
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than the average case. However, there are other representations which
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are more efficient overall, yet the worst cases might be terrible.
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Heaps are also very useful in big disk sorts. You most probably all
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know that a big sort implies producing "runs" (which are pre-sorted
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sequences, which size is usually related to the amount of CPU memory),
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followed by a merging passes for these runs, which merging is often
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very cleverly organised[1]. It is very important that the initial
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sort produces the longest runs possible. Tournaments are a good way
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to that. If, using all the memory available to hold a tournament, you
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replace and percolate items that happen to fit the current run, you'll
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produce runs which are twice the size of the memory for random input,
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and much better for input fuzzily ordered.
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Moreover, if you output the 0'th item on disk and get an input which
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may not fit in the current tournament (because the value "wins" over
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the last output value), it cannot fit in the heap, so the size of the
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heap decreases. The freed memory could be cleverly reused immediately
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for progressively building a second heap, which grows at exactly the
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same rate the first heap is melting. When the first heap completely
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vanishes, you switch heaps and start a new run. Clever and quite
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effective!
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In a word, heaps are useful memory structures to know. I use them in
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a few applications, and I think it is good to keep a `heap' module
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around. :-)
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--------------------
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[1] The disk balancing algorithms which are current, nowadays, are
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more annoying than clever, and this is a consequence of the seeking
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capabilities of the disks. On devices which cannot seek, like big
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tape drives, the story was quite different, and one had to be very
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clever to ensure (far in advance) that each tape movement will be the
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most effective possible (that is, will best participate at
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"progressing" the merge). Some tapes were even able to read
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backwards, and this was also used to avoid the rewinding time.
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Believe me, real good tape sorts were quite spectacular to watch!
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From all times, sorting has always been a Great Art! :-)
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"""
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Merged revisions 53623-53858 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r53624 | peter.astrand | 2007-02-02 20:06:36 +0100 (Fri, 02 Feb 2007) | 1 line
We had several if statements checking the value of a fd. This is unsafe, since valid fds might be zero. We should check for not None instead.
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r53635 | kurt.kaiser | 2007-02-05 07:03:18 +0100 (Mon, 05 Feb 2007) | 2 lines
Add 'raw' support to configHandler. Patch 1650174 Tal Einat.
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r53641 | kurt.kaiser | 2007-02-06 00:02:16 +0100 (Tue, 06 Feb 2007) | 5 lines
1. Calltips now 'handle' tuples in the argument list (display '<tuple>' :)
Suggested solution by Christos Georgiou, Bug 791968.
2. Clean up tests, were not failing when they should have been.
4. Remove some camelcase and an unneeded try/except block.
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r53644 | kurt.kaiser | 2007-02-06 04:21:40 +0100 (Tue, 06 Feb 2007) | 2 lines
Clean up ModifiedInterpreter.runcode() structure
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r53646 | peter.astrand | 2007-02-06 16:37:50 +0100 (Tue, 06 Feb 2007) | 1 line
Applied patch 1124861.3.patch to solve bug #1124861: Automatically create pipes on Windows, if GetStdHandle fails. Will backport.
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r53648 | lars.gustaebel | 2007-02-06 19:38:13 +0100 (Tue, 06 Feb 2007) | 4 lines
Patch #1652681: create nonexistent files in append mode and
allow appending to empty files.
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r53649 | kurt.kaiser | 2007-02-06 20:09:43 +0100 (Tue, 06 Feb 2007) | 4 lines
Updated patch (CodeContext.061217.patch) to
[ 1362975 ] CodeContext - Improved text indentation
Tal Einat 16Dec06
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r53650 | kurt.kaiser | 2007-02-06 20:21:19 +0100 (Tue, 06 Feb 2007) | 2 lines
narrow exception per [ 1540849 ] except too broad
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r53653 | kurt.kaiser | 2007-02-07 04:39:41 +0100 (Wed, 07 Feb 2007) | 4 lines
[ 1621265 ] Auto-completion list placement
Move AC window below input line unless not enough space, then put it above.
Patch: Tal Einat
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r53654 | kurt.kaiser | 2007-02-07 09:07:13 +0100 (Wed, 07 Feb 2007) | 2 lines
Handle AttributeError during calltip lookup
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r53656 | raymond.hettinger | 2007-02-07 21:08:22 +0100 (Wed, 07 Feb 2007) | 3 lines
SF #1615701: make d.update(m) honor __getitem__() and keys() in dict subclasses
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r53658 | raymond.hettinger | 2007-02-07 22:04:20 +0100 (Wed, 07 Feb 2007) | 1 line
SF: 1397711 Set docs conflated immutable and hashable
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r53660 | raymond.hettinger | 2007-02-07 22:42:17 +0100 (Wed, 07 Feb 2007) | 1 line
Check for a common user error with defaultdict().
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r53662 | raymond.hettinger | 2007-02-07 23:24:07 +0100 (Wed, 07 Feb 2007) | 1 line
Bug #1575169: operator.isSequenceType() now returns False for subclasses of dict.
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r53664 | raymond.hettinger | 2007-02-08 00:49:03 +0100 (Thu, 08 Feb 2007) | 1 line
Silence compiler warning
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r53666 | raymond.hettinger | 2007-02-08 01:07:32 +0100 (Thu, 08 Feb 2007) | 1 line
Do not let overflows in enumerate() and count() pass silently.
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r53668 | raymond.hettinger | 2007-02-08 01:50:39 +0100 (Thu, 08 Feb 2007) | 1 line
Bypass set specific optimizations for set and frozenset subclasses.
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r53670 | raymond.hettinger | 2007-02-08 02:42:35 +0100 (Thu, 08 Feb 2007) | 1 line
Fix docstring bug
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r53671 | martin.v.loewis | 2007-02-08 10:13:36 +0100 (Thu, 08 Feb 2007) | 3 lines
Bug #1653736: Complain about keyword arguments to time.isoformat.
Will backport to 2.5.
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r53679 | kurt.kaiser | 2007-02-08 23:58:18 +0100 (Thu, 08 Feb 2007) | 6 lines
Corrected some bugs in AutoComplete. Also, Page Up/Down in ACW implemented;
mouse and cursor selection in ACWindow implemented; double Tab inserts current
selection and closes ACW (similar to double-click and Return); scroll wheel now
works in ACW. Added AutoComplete instructions to IDLE Help.
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r53689 | martin.v.loewis | 2007-02-09 13:19:32 +0100 (Fri, 09 Feb 2007) | 3 lines
Bug #1653736: Properly discard third argument to slot_nb_inplace_power.
Will backport.
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r53691 | martin.v.loewis | 2007-02-09 13:36:48 +0100 (Fri, 09 Feb 2007) | 4 lines
Bug #1600860: Search for shared python library in LIBDIR, not
lib/python/config, on "linux" and "gnu" systems.
Will backport.
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r53693 | martin.v.loewis | 2007-02-09 13:58:49 +0100 (Fri, 09 Feb 2007) | 2 lines
Update broken link. Will backport to 2.5.
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r53697 | georg.brandl | 2007-02-09 19:48:41 +0100 (Fri, 09 Feb 2007) | 2 lines
Bug #1656078: typo in in profile docs.
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r53731 | brett.cannon | 2007-02-11 06:36:00 +0100 (Sun, 11 Feb 2007) | 3 lines
Change a very minor inconsistency (that is purely cosmetic) in the AST
definition.
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r53735 | skip.montanaro | 2007-02-11 19:24:37 +0100 (Sun, 11 Feb 2007) | 1 line
fix trace.py --ignore-dir
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r53741 | brett.cannon | 2007-02-11 20:44:41 +0100 (Sun, 11 Feb 2007) | 3 lines
Check in changed Python-ast.c from a cosmetic change to Python.asdl (in
r53731).
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r53751 | brett.cannon | 2007-02-12 04:51:02 +0100 (Mon, 12 Feb 2007) | 5 lines
Modify Parser/asdl_c.py so that the __version__ number for Python/Python-ast.c
is specified at the top of the file. Also add a note that Python/Python-ast.c
needs to be committed separately after a change to the AST grammar to capture
the revision number of the change (which is what __version__ is set to).
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r53752 | lars.gustaebel | 2007-02-12 10:25:53 +0100 (Mon, 12 Feb 2007) | 3 lines
Bug #1656581: Point out that external file objects are supposed to be
at position 0.
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r53754 | martin.v.loewis | 2007-02-12 13:21:10 +0100 (Mon, 12 Feb 2007) | 3 lines
Patch 1463026: Support default namespace in XMLGenerator.
Fixes #847665. Will backport.
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r53757 | armin.rigo | 2007-02-12 17:23:24 +0100 (Mon, 12 Feb 2007) | 4 lines
Fix the line to what is my guess at the original author's meaning.
(The line has no effect anyway, but is present because it's
customary call the base class __init__).
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r53763 | martin.v.loewis | 2007-02-13 09:34:45 +0100 (Tue, 13 Feb 2007) | 3 lines
Patch #685268: Consider a package's __path__ in imputil.
Will backport.
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r53765 | martin.v.loewis | 2007-02-13 10:49:38 +0100 (Tue, 13 Feb 2007) | 2 lines
Patch #698833: Support file decryption in zipfile.
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r53766 | martin.v.loewis | 2007-02-13 11:10:39 +0100 (Tue, 13 Feb 2007) | 3 lines
Patch #1517891: Make 'a' create the file if it doesn't exist.
Fixes #1514451.
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r53767 | martin.v.loewis | 2007-02-13 13:08:24 +0100 (Tue, 13 Feb 2007) | 3 lines
Bug #1658794: Remove extraneous 'this'.
Will backport to 2.5.
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r53769 | martin.v.loewis | 2007-02-13 13:14:19 +0100 (Tue, 13 Feb 2007) | 3 lines
Patch #1657276: Make NETLINK_DNRTMSG conditional.
Will backport.
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r53771 | lars.gustaebel | 2007-02-13 17:09:24 +0100 (Tue, 13 Feb 2007) | 4 lines
Patch #1647484: Renamed GzipFile's filename attribute to name. The
filename attribute is still accessible as a property that emits a
DeprecationWarning.
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r53772 | lars.gustaebel | 2007-02-13 17:24:00 +0100 (Tue, 13 Feb 2007) | 3 lines
Strip the '.gz' extension from the filename that is written to the
gzip header.
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r53774 | martin.v.loewis | 2007-02-14 11:07:37 +0100 (Wed, 14 Feb 2007) | 2 lines
Patch #1432399: Add HCI sockets.
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r53775 | martin.v.loewis | 2007-02-14 12:30:07 +0100 (Wed, 14 Feb 2007) | 2 lines
Update 1432399 to removal of _BT_SOCKADDR_MEMB.
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r53776 | martin.v.loewis | 2007-02-14 12:30:56 +0100 (Wed, 14 Feb 2007) | 3 lines
Ignore directory time stamps when considering
whether to rerun libffi configure.
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r53778 | lars.gustaebel | 2007-02-14 15:45:12 +0100 (Wed, 14 Feb 2007) | 4 lines
A missing binary mode in AppendTest caused failures in Windows
Buildbot.
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r53782 | martin.v.loewis | 2007-02-15 10:51:35 +0100 (Thu, 15 Feb 2007) | 2 lines
Patch #1397848: add the reasoning behind no-resize-on-shrinkage.
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r53783 | georg.brandl | 2007-02-15 11:37:59 +0100 (Thu, 15 Feb 2007) | 2 lines
Make functools.wraps() docs a bit clearer.
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r53785 | georg.brandl | 2007-02-15 12:29:04 +0100 (Thu, 15 Feb 2007) | 2 lines
Patch #1494140: Add documentation for the new struct.Struct object.
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r53787 | georg.brandl | 2007-02-15 12:29:55 +0100 (Thu, 15 Feb 2007) | 2 lines
Add missing \versionadded.
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r53800 | brett.cannon | 2007-02-15 23:54:39 +0100 (Thu, 15 Feb 2007) | 11 lines
Update the encoding package's search function to use absolute imports when
calling __import__. This helps make the expected search locations for encoding
modules be more explicit.
One could use an explicit value for __path__ when making the call to __import__
to force the exact location searched for encodings. This would give the most
strict search path possible if one is worried about malicious code being
imported. The unfortunate side-effect of that is that if __path__ was modified
on 'encodings' on purpose in a safe way it would not be picked up in future
__import__ calls.
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r53801 | brett.cannon | 2007-02-16 20:33:01 +0100 (Fri, 16 Feb 2007) | 2 lines
Make the __import__ call in encodings.__init__ absolute with a level 0 call.
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r53809 | vinay.sajip | 2007-02-16 23:36:24 +0100 (Fri, 16 Feb 2007) | 1 line
Minor fix for currentframe (SF #1652788).
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r53818 | raymond.hettinger | 2007-02-19 03:03:19 +0100 (Mon, 19 Feb 2007) | 3 lines
Extend work on revision 52962: Eliminate redundant calls to PyObject_Hash().
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r53820 | raymond.hettinger | 2007-02-19 05:08:43 +0100 (Mon, 19 Feb 2007) | 1 line
Add merge() function to heapq.
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r53821 | raymond.hettinger | 2007-02-19 06:28:28 +0100 (Mon, 19 Feb 2007) | 1 line
Add tie-breaker count to preserve sort stability.
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r53822 | raymond.hettinger | 2007-02-19 07:59:32 +0100 (Mon, 19 Feb 2007) | 1 line
Use C heapreplace() instead of slower _siftup() in pure python.
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r53823 | raymond.hettinger | 2007-02-19 08:30:21 +0100 (Mon, 19 Feb 2007) | 1 line
Add test for merge stability
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r53824 | raymond.hettinger | 2007-02-19 10:14:10 +0100 (Mon, 19 Feb 2007) | 1 line
Provide an example of defaultdict with non-zero constant factory function.
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r53825 | lars.gustaebel | 2007-02-19 10:54:47 +0100 (Mon, 19 Feb 2007) | 2 lines
Moved misplaced news item.
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r53826 | martin.v.loewis | 2007-02-19 11:55:19 +0100 (Mon, 19 Feb 2007) | 3 lines
Patch #1490190: posixmodule now includes os.chflags() and os.lchflags()
functions on platforms where the underlying system calls are available.
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r53827 | raymond.hettinger | 2007-02-19 19:15:04 +0100 (Mon, 19 Feb 2007) | 1 line
Fixup docstrings for merge().
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r53829 | raymond.hettinger | 2007-02-19 21:44:04 +0100 (Mon, 19 Feb 2007) | 1 line
Fixup set/dict interoperability.
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r53837 | raymond.hettinger | 2007-02-21 06:20:38 +0100 (Wed, 21 Feb 2007) | 1 line
Add itertools.izip_longest().
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r53838 | raymond.hettinger | 2007-02-21 18:22:05 +0100 (Wed, 21 Feb 2007) | 1 line
Remove filler struct item and fix leak.
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2007-02-23 11:07:44 -04:00
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__all__ = ['heappush', 'heappop', 'heapify', 'heapreplace', 'merge',
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'nlargest', 'nsmallest']
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2004-06-10 02:03:17 -03:00
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2004-12-02 04:59:14 -04:00
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from itertools import islice, repeat, count, imap, izip, tee
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Merged revisions 53005-53303 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r53012 | walter.doerwald | 2006-12-12 22:55:31 +0100 (Tue, 12 Dec 2006) | 2 lines
Fix typo.
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r53023 | brett.cannon | 2006-12-13 23:31:37 +0100 (Wed, 13 Dec 2006) | 2 lines
Remove an unneeded import of 'warnings'.
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r53025 | brett.cannon | 2006-12-14 00:02:38 +0100 (Thu, 14 Dec 2006) | 2 lines
Remove unneeded imports of 'warnings'.
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r53026 | brett.cannon | 2006-12-14 00:09:53 +0100 (Thu, 14 Dec 2006) | 4 lines
Add test.test_support.guard_warnings_filter . This function returns a context
manager that protects warnings.filter from being modified once the context is
exited.
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r53029 | george.yoshida | 2006-12-14 03:22:44 +0100 (Thu, 14 Dec 2006) | 2 lines
Note that guard_warnings_filter was added in 2.6
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r53031 | vinay.sajip | 2006-12-14 09:53:55 +0100 (Thu, 14 Dec 2006) | 1 line
Added news on recent changes to logging
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r53032 | andrew.kuchling | 2006-12-14 19:57:53 +0100 (Thu, 14 Dec 2006) | 1 line
[Patch #1599256 from David Watson] check that os.fsync is available before using it
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r53042 | kurt.kaiser | 2006-12-15 06:13:11 +0100 (Fri, 15 Dec 2006) | 6 lines
1. Avoid hang when encountering a duplicate in a completion list. Bug 1571112.
2. Duplicate some old entries from Python's NEWS to IDLE's NEWS.txt
M AutoCompleteWindow.py
M NEWS.txt
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r53048 | andrew.kuchling | 2006-12-18 18:12:31 +0100 (Mon, 18 Dec 2006) | 1 line
[Bug #1618083] Add missing word; make a few grammar fixes
........
r53050 | andrew.kuchling | 2006-12-18 18:16:05 +0100 (Mon, 18 Dec 2006) | 1 line
Bump version
........
r53051 | andrew.kuchling | 2006-12-18 18:22:07 +0100 (Mon, 18 Dec 2006) | 1 line
[Bug #1616726] Fix description of generator.close(); if you raise some random exception, the exception is raised and doesn't trigger a RuntimeError
........
r53052 | andrew.kuchling | 2006-12-18 18:38:14 +0100 (Mon, 18 Dec 2006) | 1 line
Describe new methods in Queue module
........
r53053 | andrew.kuchling | 2006-12-18 20:22:24 +0100 (Mon, 18 Dec 2006) | 1 line
[Patch #1615868 by Lars Gustaebel] Use Py_off_t to fix BZ2File.seek() for offsets > 2Gb
........
r53057 | andrew.kuchling | 2006-12-18 22:29:07 +0100 (Mon, 18 Dec 2006) | 1 line
Fix markup
........
r53063 | thomas.wouters | 2006-12-19 09:17:50 +0100 (Tue, 19 Dec 2006) | 5 lines
Make sre's SubPattern objects accept slice objects like it already accepts
simple slices.
........
r53065 | andrew.kuchling | 2006-12-19 15:13:05 +0100 (Tue, 19 Dec 2006) | 6 lines
[Patch #1618455 by Ben Maurer] Improve speed of HMAC by using str.translate()
instead of a more general XOR that has to construct a list.
Slightly modified from Maurer's patch: the _strxor() function is no longer
necessary at all.
........
r53066 | andrew.kuchling | 2006-12-19 15:28:23 +0100 (Tue, 19 Dec 2006) | 9 lines
[Bug #1613651] Document socket.recv_into, socket.recvfrom_into
Also, the text for recvfrom told you to read recv() for an explanation of the
'flags' argument, but recv() just pointed you at the man page. Copied the
man-page text to recvfrom(), recvfrom_into, recv_into to avoid the pointless
redirection.
I don't have LaTeX on this machine; hope my markup is OK.
........
r53067 | andrew.kuchling | 2006-12-19 15:29:04 +0100 (Tue, 19 Dec 2006) | 1 line
Comment typo
........
r53068 | andrew.kuchling | 2006-12-19 16:11:41 +0100 (Tue, 19 Dec 2006) | 1 line
[Patch #1617413 from Dug Song] Fix HTTP Basic authentication via HTTPS
........
r53071 | andrew.kuchling | 2006-12-19 16:18:12 +0100 (Tue, 19 Dec 2006) | 1 line
[Patch #1600491 from Jim Jewett] Describe how to build help files on Windows
........
r53073 | andrew.kuchling | 2006-12-19 16:43:10 +0100 (Tue, 19 Dec 2006) | 6 lines
[Patch #1587139 by kxroberto] Protect lock acquisition/release with
try...finally to ensure the lock is always released. This could use
the 'with' statement, but the patch uses 'finally'.
2.5 backport candidate.
........
r53074 | vinay.sajip | 2006-12-19 19:29:11 +0100 (Tue, 19 Dec 2006) | 1 line
Updated documentation for findCaller() to indicate that a 3-tuple is now returned, rather than a 2-tuple.
........
r53090 | georg.brandl | 2006-12-19 23:06:46 +0100 (Tue, 19 Dec 2006) | 3 lines
Patch #1484695: The tarfile module now raises a HeaderError exception
if a buffer given to frombuf() is invalid.
........
r53099 | raymond.hettinger | 2006-12-20 07:42:06 +0100 (Wed, 20 Dec 2006) | 5 lines
Bug #1590891: random.randrange don't return correct value for big number
Needs to be backported.
........
r53106 | georg.brandl | 2006-12-20 12:55:16 +0100 (Wed, 20 Dec 2006) | 3 lines
Testcase for patch #1484695.
........
r53110 | andrew.kuchling | 2006-12-20 20:48:20 +0100 (Wed, 20 Dec 2006) | 17 lines
[Apply length-checking.diff from bug #1599254]
Add length checking to single-file mailbox formats: before doing a
flush() on a mailbox, seek to the end and verify its length is
unchanged, raising ExternalClashError if the file's length has
changed.
This fix avoids potential data loss if some other process appends to
the mailbox file after the table of contents has been generated;
instead of overwriting the modified file, you'll get the exception.
I also noticed that the self._lookup() call in self.flush() wasn't
necessary (everything that sets self._pending to True also calls
self.lookup()), and replaced it by an assertion.
2.5 backport candidate.
........
r53112 | andrew.kuchling | 2006-12-20 20:57:10 +0100 (Wed, 20 Dec 2006) | 1 line
[Bug #1619674] Make sum() use the term iterable, not sequence
........
r53113 | andrew.kuchling | 2006-12-20 20:58:11 +0100 (Wed, 20 Dec 2006) | 1 line
Two grammar fixes
........
r53115 | andrew.kuchling | 2006-12-20 21:11:12 +0100 (Wed, 20 Dec 2006) | 5 lines
Some other built-in functions are described with 'sequence' arguments
that should really be 'iterable'; this commit changes them.
Did I miss any? Did I introduce any errors?
........
r53117 | andrew.kuchling | 2006-12-20 21:20:42 +0100 (Wed, 20 Dec 2006) | 1 line
[Bug #1619680] in_dll() arguments are documented in the wrong order
........
r53120 | neal.norwitz | 2006-12-21 05:38:00 +0100 (Thu, 21 Dec 2006) | 1 line
Lars asked for permission on on python-dev for work on tarfile.py
........
r53125 | andrew.kuchling | 2006-12-21 14:40:29 +0100 (Thu, 21 Dec 2006) | 1 line
Mention the os.SEEK_* constants
........
r53129 | walter.doerwald | 2006-12-21 19:06:30 +0100 (Thu, 21 Dec 2006) | 2 lines
Fix typo.
........
r53131 | thomas.heller | 2006-12-21 19:30:56 +0100 (Thu, 21 Dec 2006) | 3 lines
Fix wrong markup of an argument in a method signature.
Will backport.
........
r53137 | andrew.kuchling | 2006-12-22 01:50:56 +0100 (Fri, 22 Dec 2006) | 1 line
Typo fix
........
r53139 | andrew.kuchling | 2006-12-22 14:25:02 +0100 (Fri, 22 Dec 2006) | 1 line
[Bug #737202; fix from Titus Brown] Make CGIHTTPServer work for scripts in sub-directories
........
r53141 | andrew.kuchling | 2006-12-22 16:04:45 +0100 (Fri, 22 Dec 2006) | 6 lines
[Bug #802128] Make the mode argument of dumbdbm actually work the way it's
described, and add a test for it.
2.5 bugfix candidate, maybe; arguably this patch changes the API of
dumbdbm and shouldn't be added in a point-release.
........
r53142 | andrew.kuchling | 2006-12-22 16:16:58 +0100 (Fri, 22 Dec 2006) | 6 lines
[Bug #802128 continued] Modify mode depending on the process umask.
Is there really no other way to read the umask than to set it?
Hope this works on Windows...
........
r53145 | andrew.kuchling | 2006-12-22 17:43:26 +0100 (Fri, 22 Dec 2006) | 1 line
[Bug #776202] Apply Walter Doerwald's patch to use text mode for encoded files
........
r53146 | andrew.kuchling | 2006-12-22 19:41:42 +0100 (Fri, 22 Dec 2006) | 9 lines
[Patch #783050 from Patrick Lynch] The emulation of forkpty() is incorrect;
the master should close the slave fd.
Added a test to test_pty.py that reads from the master_fd after doing
a pty.fork(); without the fix it hangs forever instead of raising an
exception. (<crossing fingers for the buildbots>)
2.5 backport candidate.
........
r53147 | andrew.kuchling | 2006-12-22 20:06:16 +0100 (Fri, 22 Dec 2006) | 1 line
[Patch #827559 from Chris Gonnerman] Make SimpleHTTPServer redirect when a directory URL is missing the trailing slash; this lets relative links work.
........
r53149 | andrew.kuchling | 2006-12-22 20:21:27 +0100 (Fri, 22 Dec 2006) | 1 line
Darn; this test works when you run test_pty.py directly, but fails when regrtest runs it (the os.read() raises os.error). I can't figure out the cause, so am commenting out the test.
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r53150 | andrew.kuchling | 2006-12-22 22:48:19 +0100 (Fri, 22 Dec 2006) | 1 line
Frak; this test also fails
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r53153 | lars.gustaebel | 2006-12-23 17:40:13 +0100 (Sat, 23 Dec 2006) | 5 lines
Patch #1230446: tarfile.py: fix ExFileObject so that read() and tell()
work correctly together with readline().
Will backport to 2.5.
........
r53155 | lars.gustaebel | 2006-12-23 18:57:23 +0100 (Sat, 23 Dec 2006) | 5 lines
Patch #1262036: Prevent TarFiles from being added to themselves under
certain conditions.
Will backport to 2.5.
........
r53159 | andrew.kuchling | 2006-12-27 04:25:31 +0100 (Wed, 27 Dec 2006) | 4 lines
[Part of patch #1182394] Move the HMAC blocksize to be a class-level
constant; this allows changing it in a subclass. To accommodate this,
copy() now uses __class__. Also add some text to a comment.
........
r53160 | andrew.kuchling | 2006-12-27 04:31:24 +0100 (Wed, 27 Dec 2006) | 1 line
[Rest of patch #1182394] Add ._current() method so that we can use the written-in-C .hexdigest() method
........
r53161 | lars.gustaebel | 2006-12-27 11:30:46 +0100 (Wed, 27 Dec 2006) | 4 lines
Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj argument.
Will backport to 2.5.
........
r53165 | neal.norwitz | 2006-12-28 05:39:20 +0100 (Thu, 28 Dec 2006) | 1 line
Remove a stray (old) macro name left around (I guess)
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r53188 | neal.norwitz | 2006-12-29 04:01:53 +0100 (Fri, 29 Dec 2006) | 1 line
SF bug #1623890, fix argument name in docstring
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r53200 | raymond.hettinger | 2006-12-30 05:01:17 +0100 (Sat, 30 Dec 2006) | 1 line
For sets with cyclical reprs, emit an ellipsis instead of infinitely recursing.
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r53232 | brett.cannon | 2007-01-04 01:23:49 +0100 (Thu, 04 Jan 2007) | 3 lines
Add EnvironmentVarGuard to test.test_support. Provides a context manager to
temporarily set or unset environment variables.
........
r53235 | neal.norwitz | 2007-01-04 07:25:31 +0100 (Thu, 04 Jan 2007) | 1 line
SF #1627373, fix typo in CarbonEvt.
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r53244 | raymond.hettinger | 2007-01-04 18:53:34 +0100 (Thu, 04 Jan 2007) | 1 line
Fix stability of heapq's nlargest() and nsmallest().
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r53249 | martin.v.loewis | 2007-01-04 22:06:12 +0100 (Thu, 04 Jan 2007) | 3 lines
Bug #1566280: Explicitly invoke threading._shutdown from Py_Main,
to avoid relying on atexit.
Will backport to 2.5.
........
r53252 | gregory.p.smith | 2007-01-05 02:59:42 +0100 (Fri, 05 Jan 2007) | 3 lines
Support linking of the bsddb module against BerkeleyDB 4.5.x
(will backport to 2.5)
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r53253 | gregory.p.smith | 2007-01-05 03:06:17 +0100 (Fri, 05 Jan 2007) | 2 lines
bump module version to match supported berkeleydb version
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r53255 | neal.norwitz | 2007-01-05 06:25:22 +0100 (Fri, 05 Jan 2007) | 6 lines
Prevent crash on shutdown which can occur if we are finalizing
and the module dict has been cleared already and some object
raises a warning (like in a __del__).
Will backport.
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r53258 | gregory.p.smith | 2007-01-05 08:21:35 +0100 (Fri, 05 Jan 2007) | 2 lines
typo fix
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r53260 | neal.norwitz | 2007-01-05 09:06:43 +0100 (Fri, 05 Jan 2007) | 1 line
Add Collin Winter for access to update PEP 3107
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r53262 | andrew.kuchling | 2007-01-05 15:22:17 +0100 (Fri, 05 Jan 2007) | 1 line
[Bug #1622533] Make docstrings raw strings because they contain control characters (\0, \1)
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r53264 | andrew.kuchling | 2007-01-05 16:51:24 +0100 (Fri, 05 Jan 2007) | 1 line
[Patch #1520904] Fix bsddb tests to write to the temp directory instead of the Lib/bsddb/test directory
........
r53279 | brett.cannon | 2007-01-05 22:45:09 +0100 (Fri, 05 Jan 2007) | 3 lines
Silence a warning from gcc 4.0.1 by specifying a function's parameter list is
'void' instead of just a set of empty parentheses.
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r53285 | raymond.hettinger | 2007-01-06 02:14:41 +0100 (Sat, 06 Jan 2007) | 2 lines
SF# 1409443: Expand comment to cover the interaction between f->f_lasti and the PREDICT macros.
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r53286 | anthony.baxter | 2007-01-06 05:45:54 +0100 (Sat, 06 Jan 2007) | 1 line
update to (c) years to include 2007
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r53291 | neal.norwitz | 2007-01-06 22:24:35 +0100 (Sat, 06 Jan 2007) | 1 line
Add Josiah to SF for maintaining asyncore/asynchat
........
r53293 | peter.astrand | 2007-01-07 09:53:46 +0100 (Sun, 07 Jan 2007) | 1 line
Re-implemented fix for #1531862 once again, in a way that works with Python 2.2. Fixes bug #1603424.
........
r53295 | peter.astrand | 2007-01-07 15:34:16 +0100 (Sun, 07 Jan 2007) | 1 line
Avoid O(N**2) bottleneck in _communicate_(). Fixes #1598181.
........
r53300 | raymond.hettinger | 2007-01-08 19:09:20 +0100 (Mon, 08 Jan 2007) | 1 line
Fix zero-length corner case for iterating over a mutating deque.
........
r53301 | vinay.sajip | 2007-01-08 19:50:32 +0100 (Mon, 08 Jan 2007) | 4 lines
Bare except clause removed from SMTPHandler.emit(). Now, only ImportError is trapped.
Bare except clause removed from SocketHandler.createSocket(). Now, only socket.error is trapped.
(SF #411881)
........
r53302 | vinay.sajip | 2007-01-08 19:51:46 +0100 (Mon, 08 Jan 2007) | 2 lines
Bare except clause removed from LogRecord.__init__. Now, only ValueError, TypeError and AttributeError are trapped.
(SF #411881)
........
r53303 | vinay.sajip | 2007-01-08 19:52:36 +0100 (Mon, 08 Jan 2007) | 1 line
Added entries about removal of some bare except clauses from logging.
........
2007-01-09 19:18:33 -04:00
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from operator import itemgetter, neg
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import bisect
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def heappush(heap, item):
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"""Push item onto heap, maintaining the heap invariant."""
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heap.append(item)
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_siftdown(heap, 0, len(heap)-1)
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def heappop(heap):
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"""Pop the smallest item off the heap, maintaining the heap invariant."""
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lastelt = heap.pop() # raises appropriate IndexError if heap is empty
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if heap:
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returnitem = heap[0]
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heap[0] = lastelt
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_siftup(heap, 0)
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else:
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returnitem = lastelt
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return returnitem
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def heapreplace(heap, item):
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"""Pop and return the current smallest value, and add the new item.
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This is more efficient than heappop() followed by heappush(), and can be
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more appropriate when using a fixed-size heap. Note that the value
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returned may be larger than item! That constrains reasonable uses of
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2004-09-06 04:04:09 -03:00
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this routine unless written as part of a conditional replacement:
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2004-09-06 04:04:09 -03:00
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if item > heap[0]:
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item = heapreplace(heap, item)
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2004-04-19 16:06:21 -03:00
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"""
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returnitem = heap[0] # raises appropriate IndexError if heap is empty
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heap[0] = item
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_siftup(heap, 0)
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return returnitem
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def heapify(x):
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"""Transform list into a heap, in-place, in O(len(heap)) time."""
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n = len(x)
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# Transform bottom-up. The largest index there's any point to looking at
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# is the largest with a child index in-range, so must have 2*i + 1 < n,
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# or i < (n-1)/2. If n is even = 2*j, this is (2*j-1)/2 = j-1/2 so
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# j-1 is the largest, which is n//2 - 1. If n is odd = 2*j+1, this is
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# (2*j+1-1)/2 = j so j-1 is the largest, and that's again n//2-1.
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for i in reversed(xrange(n//2)):
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_siftup(x, i)
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def nlargest(n, iterable):
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"""Find the n largest elements in a dataset.
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Equivalent to: sorted(iterable, reverse=True)[:n]
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"""
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it = iter(iterable)
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result = list(islice(it, n))
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if not result:
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return result
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heapify(result)
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_heapreplace = heapreplace
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sol = result[0] # sol --> smallest of the nlargest
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for elem in it:
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if elem <= sol:
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continue
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_heapreplace(result, elem)
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sol = result[0]
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result.sort(reverse=True)
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return result
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2004-11-29 01:54:48 -04:00
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def nsmallest(n, iterable):
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"""Find the n smallest elements in a dataset.
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Equivalent to: sorted(iterable)[:n]
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"""
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if hasattr(iterable, '__len__') and n * 10 <= len(iterable):
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# For smaller values of n, the bisect method is faster than a minheap.
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# It is also memory efficient, consuming only n elements of space.
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it = iter(iterable)
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result = sorted(islice(it, 0, n))
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if not result:
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return result
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insort = bisect.insort
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pop = result.pop
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los = result[-1] # los --> Largest of the nsmallest
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for elem in it:
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if los <= elem:
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continue
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insort(result, elem)
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pop()
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los = result[-1]
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return result
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# An alternative approach manifests the whole iterable in memory but
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# saves comparisons by heapifying all at once. Also, saves time
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# over bisect.insort() which has O(n) data movement time for every
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# insertion. Finding the n smallest of an m length iterable requires
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# O(m) + O(n log m) comparisons.
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2004-06-10 02:03:17 -03:00
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h = list(iterable)
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heapify(h)
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return map(heappop, repeat(h, min(n, len(h))))
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2004-04-19 16:06:21 -03:00
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# 'heap' is a heap at all indices >= startpos, except possibly for pos. pos
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# is the index of a leaf with a possibly out-of-order value. Restore the
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# heap invariant.
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def _siftdown(heap, startpos, pos):
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newitem = heap[pos]
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# Follow the path to the root, moving parents down until finding a place
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# newitem fits.
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while pos > startpos:
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parentpos = (pos - 1) >> 1
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parent = heap[parentpos]
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if parent <= newitem:
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break
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heap[pos] = parent
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pos = parentpos
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heap[pos] = newitem
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# The child indices of heap index pos are already heaps, and we want to make
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# a heap at index pos too. We do this by bubbling the smaller child of
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# pos up (and so on with that child's children, etc) until hitting a leaf,
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# then using _siftdown to move the oddball originally at index pos into place.
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#
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# We *could* break out of the loop as soon as we find a pos where newitem <=
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# both its children, but turns out that's not a good idea, and despite that
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# many books write the algorithm that way. During a heap pop, the last array
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# element is sifted in, and that tends to be large, so that comparing it
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# against values starting from the root usually doesn't pay (= usually doesn't
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# get us out of the loop early). See Knuth, Volume 3, where this is
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# explained and quantified in an exercise.
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#
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# Cutting the # of comparisons is important, since these routines have no
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# way to extract "the priority" from an array element, so that intelligence
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# is likely to be hiding in custom __cmp__ methods, or in array elements
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# storing (priority, record) tuples. Comparisons are thus potentially
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# expensive.
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#
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# On random arrays of length 1000, making this change cut the number of
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# comparisons made by heapify() a little, and those made by exhaustive
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# heappop() a lot, in accord with theory. Here are typical results from 3
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# runs (3 just to demonstrate how small the variance is):
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#
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# Compares needed by heapify Compares needed by 1000 heappops
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# -------------------------- --------------------------------
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# 1837 cut to 1663 14996 cut to 8680
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# 1855 cut to 1659 14966 cut to 8678
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# 1847 cut to 1660 15024 cut to 8703
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#
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# Building the heap by using heappush() 1000 times instead required
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# 2198, 2148, and 2219 compares: heapify() is more efficient, when
|
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# you can use it.
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#
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# The total compares needed by list.sort() on the same lists were 8627,
|
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# 8627, and 8632 (this should be compared to the sum of heapify() and
|
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|
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# heappop() compares): list.sort() is (unsurprisingly!) more efficient
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# for sorting.
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|
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|
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|
|
|
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def _siftup(heap, pos):
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endpos = len(heap)
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|
|
|
|
startpos = pos
|
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newitem = heap[pos]
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|
|
|
|
# Bubble up the smaller child until hitting a leaf.
|
|
|
|
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childpos = 2*pos + 1 # leftmost child position
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|
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|
while childpos < endpos:
|
|
|
|
|
# Set childpos to index of smaller child.
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rightpos = childpos + 1
|
|
|
|
|
if rightpos < endpos and heap[rightpos] <= heap[childpos]:
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childpos = rightpos
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|
|
|
# Move the smaller child up.
|
|
|
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heap[pos] = heap[childpos]
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|
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|
pos = childpos
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|
|
|
|
childpos = 2*pos + 1
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# The leaf at pos is empty now. Put newitem there, and bubble it up
|
|
|
|
|
# to its final resting place (by sifting its parents down).
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heap[pos] = newitem
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|
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|
_siftdown(heap, startpos, pos)
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# If available, use C implementation
|
|
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try:
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2004-06-13 02:26:33 -03:00
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|
from _heapq import heappush, heappop, heapify, heapreplace, nlargest, nsmallest
|
2004-04-19 16:06:21 -03:00
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except ImportError:
|
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|
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pass
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|
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|
Merged revisions 53623-53858 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r53624 | peter.astrand | 2007-02-02 20:06:36 +0100 (Fri, 02 Feb 2007) | 1 line
We had several if statements checking the value of a fd. This is unsafe, since valid fds might be zero. We should check for not None instead.
........
r53635 | kurt.kaiser | 2007-02-05 07:03:18 +0100 (Mon, 05 Feb 2007) | 2 lines
Add 'raw' support to configHandler. Patch 1650174 Tal Einat.
........
r53641 | kurt.kaiser | 2007-02-06 00:02:16 +0100 (Tue, 06 Feb 2007) | 5 lines
1. Calltips now 'handle' tuples in the argument list (display '<tuple>' :)
Suggested solution by Christos Georgiou, Bug 791968.
2. Clean up tests, were not failing when they should have been.
4. Remove some camelcase and an unneeded try/except block.
........
r53644 | kurt.kaiser | 2007-02-06 04:21:40 +0100 (Tue, 06 Feb 2007) | 2 lines
Clean up ModifiedInterpreter.runcode() structure
........
r53646 | peter.astrand | 2007-02-06 16:37:50 +0100 (Tue, 06 Feb 2007) | 1 line
Applied patch 1124861.3.patch to solve bug #1124861: Automatically create pipes on Windows, if GetStdHandle fails. Will backport.
........
r53648 | lars.gustaebel | 2007-02-06 19:38:13 +0100 (Tue, 06 Feb 2007) | 4 lines
Patch #1652681: create nonexistent files in append mode and
allow appending to empty files.
........
r53649 | kurt.kaiser | 2007-02-06 20:09:43 +0100 (Tue, 06 Feb 2007) | 4 lines
Updated patch (CodeContext.061217.patch) to
[ 1362975 ] CodeContext - Improved text indentation
Tal Einat 16Dec06
........
r53650 | kurt.kaiser | 2007-02-06 20:21:19 +0100 (Tue, 06 Feb 2007) | 2 lines
narrow exception per [ 1540849 ] except too broad
........
r53653 | kurt.kaiser | 2007-02-07 04:39:41 +0100 (Wed, 07 Feb 2007) | 4 lines
[ 1621265 ] Auto-completion list placement
Move AC window below input line unless not enough space, then put it above.
Patch: Tal Einat
........
r53654 | kurt.kaiser | 2007-02-07 09:07:13 +0100 (Wed, 07 Feb 2007) | 2 lines
Handle AttributeError during calltip lookup
........
r53656 | raymond.hettinger | 2007-02-07 21:08:22 +0100 (Wed, 07 Feb 2007) | 3 lines
SF #1615701: make d.update(m) honor __getitem__() and keys() in dict subclasses
........
r53658 | raymond.hettinger | 2007-02-07 22:04:20 +0100 (Wed, 07 Feb 2007) | 1 line
SF: 1397711 Set docs conflated immutable and hashable
........
r53660 | raymond.hettinger | 2007-02-07 22:42:17 +0100 (Wed, 07 Feb 2007) | 1 line
Check for a common user error with defaultdict().
........
r53662 | raymond.hettinger | 2007-02-07 23:24:07 +0100 (Wed, 07 Feb 2007) | 1 line
Bug #1575169: operator.isSequenceType() now returns False for subclasses of dict.
........
r53664 | raymond.hettinger | 2007-02-08 00:49:03 +0100 (Thu, 08 Feb 2007) | 1 line
Silence compiler warning
........
r53666 | raymond.hettinger | 2007-02-08 01:07:32 +0100 (Thu, 08 Feb 2007) | 1 line
Do not let overflows in enumerate() and count() pass silently.
........
r53668 | raymond.hettinger | 2007-02-08 01:50:39 +0100 (Thu, 08 Feb 2007) | 1 line
Bypass set specific optimizations for set and frozenset subclasses.
........
r53670 | raymond.hettinger | 2007-02-08 02:42:35 +0100 (Thu, 08 Feb 2007) | 1 line
Fix docstring bug
........
r53671 | martin.v.loewis | 2007-02-08 10:13:36 +0100 (Thu, 08 Feb 2007) | 3 lines
Bug #1653736: Complain about keyword arguments to time.isoformat.
Will backport to 2.5.
........
r53679 | kurt.kaiser | 2007-02-08 23:58:18 +0100 (Thu, 08 Feb 2007) | 6 lines
Corrected some bugs in AutoComplete. Also, Page Up/Down in ACW implemented;
mouse and cursor selection in ACWindow implemented; double Tab inserts current
selection and closes ACW (similar to double-click and Return); scroll wheel now
works in ACW. Added AutoComplete instructions to IDLE Help.
........
r53689 | martin.v.loewis | 2007-02-09 13:19:32 +0100 (Fri, 09 Feb 2007) | 3 lines
Bug #1653736: Properly discard third argument to slot_nb_inplace_power.
Will backport.
........
r53691 | martin.v.loewis | 2007-02-09 13:36:48 +0100 (Fri, 09 Feb 2007) | 4 lines
Bug #1600860: Search for shared python library in LIBDIR, not
lib/python/config, on "linux" and "gnu" systems.
Will backport.
........
r53693 | martin.v.loewis | 2007-02-09 13:58:49 +0100 (Fri, 09 Feb 2007) | 2 lines
Update broken link. Will backport to 2.5.
........
r53697 | georg.brandl | 2007-02-09 19:48:41 +0100 (Fri, 09 Feb 2007) | 2 lines
Bug #1656078: typo in in profile docs.
........
r53731 | brett.cannon | 2007-02-11 06:36:00 +0100 (Sun, 11 Feb 2007) | 3 lines
Change a very minor inconsistency (that is purely cosmetic) in the AST
definition.
........
r53735 | skip.montanaro | 2007-02-11 19:24:37 +0100 (Sun, 11 Feb 2007) | 1 line
fix trace.py --ignore-dir
........
r53741 | brett.cannon | 2007-02-11 20:44:41 +0100 (Sun, 11 Feb 2007) | 3 lines
Check in changed Python-ast.c from a cosmetic change to Python.asdl (in
r53731).
........
r53751 | brett.cannon | 2007-02-12 04:51:02 +0100 (Mon, 12 Feb 2007) | 5 lines
Modify Parser/asdl_c.py so that the __version__ number for Python/Python-ast.c
is specified at the top of the file. Also add a note that Python/Python-ast.c
needs to be committed separately after a change to the AST grammar to capture
the revision number of the change (which is what __version__ is set to).
........
r53752 | lars.gustaebel | 2007-02-12 10:25:53 +0100 (Mon, 12 Feb 2007) | 3 lines
Bug #1656581: Point out that external file objects are supposed to be
at position 0.
........
r53754 | martin.v.loewis | 2007-02-12 13:21:10 +0100 (Mon, 12 Feb 2007) | 3 lines
Patch 1463026: Support default namespace in XMLGenerator.
Fixes #847665. Will backport.
........
r53757 | armin.rigo | 2007-02-12 17:23:24 +0100 (Mon, 12 Feb 2007) | 4 lines
Fix the line to what is my guess at the original author's meaning.
(The line has no effect anyway, but is present because it's
customary call the base class __init__).
........
r53763 | martin.v.loewis | 2007-02-13 09:34:45 +0100 (Tue, 13 Feb 2007) | 3 lines
Patch #685268: Consider a package's __path__ in imputil.
Will backport.
........
r53765 | martin.v.loewis | 2007-02-13 10:49:38 +0100 (Tue, 13 Feb 2007) | 2 lines
Patch #698833: Support file decryption in zipfile.
........
r53766 | martin.v.loewis | 2007-02-13 11:10:39 +0100 (Tue, 13 Feb 2007) | 3 lines
Patch #1517891: Make 'a' create the file if it doesn't exist.
Fixes #1514451.
........
r53767 | martin.v.loewis | 2007-02-13 13:08:24 +0100 (Tue, 13 Feb 2007) | 3 lines
Bug #1658794: Remove extraneous 'this'.
Will backport to 2.5.
........
r53769 | martin.v.loewis | 2007-02-13 13:14:19 +0100 (Tue, 13 Feb 2007) | 3 lines
Patch #1657276: Make NETLINK_DNRTMSG conditional.
Will backport.
........
r53771 | lars.gustaebel | 2007-02-13 17:09:24 +0100 (Tue, 13 Feb 2007) | 4 lines
Patch #1647484: Renamed GzipFile's filename attribute to name. The
filename attribute is still accessible as a property that emits a
DeprecationWarning.
........
r53772 | lars.gustaebel | 2007-02-13 17:24:00 +0100 (Tue, 13 Feb 2007) | 3 lines
Strip the '.gz' extension from the filename that is written to the
gzip header.
........
r53774 | martin.v.loewis | 2007-02-14 11:07:37 +0100 (Wed, 14 Feb 2007) | 2 lines
Patch #1432399: Add HCI sockets.
........
r53775 | martin.v.loewis | 2007-02-14 12:30:07 +0100 (Wed, 14 Feb 2007) | 2 lines
Update 1432399 to removal of _BT_SOCKADDR_MEMB.
........
r53776 | martin.v.loewis | 2007-02-14 12:30:56 +0100 (Wed, 14 Feb 2007) | 3 lines
Ignore directory time stamps when considering
whether to rerun libffi configure.
........
r53778 | lars.gustaebel | 2007-02-14 15:45:12 +0100 (Wed, 14 Feb 2007) | 4 lines
A missing binary mode in AppendTest caused failures in Windows
Buildbot.
........
r53782 | martin.v.loewis | 2007-02-15 10:51:35 +0100 (Thu, 15 Feb 2007) | 2 lines
Patch #1397848: add the reasoning behind no-resize-on-shrinkage.
........
r53783 | georg.brandl | 2007-02-15 11:37:59 +0100 (Thu, 15 Feb 2007) | 2 lines
Make functools.wraps() docs a bit clearer.
........
r53785 | georg.brandl | 2007-02-15 12:29:04 +0100 (Thu, 15 Feb 2007) | 2 lines
Patch #1494140: Add documentation for the new struct.Struct object.
........
r53787 | georg.brandl | 2007-02-15 12:29:55 +0100 (Thu, 15 Feb 2007) | 2 lines
Add missing \versionadded.
........
r53800 | brett.cannon | 2007-02-15 23:54:39 +0100 (Thu, 15 Feb 2007) | 11 lines
Update the encoding package's search function to use absolute imports when
calling __import__. This helps make the expected search locations for encoding
modules be more explicit.
One could use an explicit value for __path__ when making the call to __import__
to force the exact location searched for encodings. This would give the most
strict search path possible if one is worried about malicious code being
imported. The unfortunate side-effect of that is that if __path__ was modified
on 'encodings' on purpose in a safe way it would not be picked up in future
__import__ calls.
........
r53801 | brett.cannon | 2007-02-16 20:33:01 +0100 (Fri, 16 Feb 2007) | 2 lines
Make the __import__ call in encodings.__init__ absolute with a level 0 call.
........
r53809 | vinay.sajip | 2007-02-16 23:36:24 +0100 (Fri, 16 Feb 2007) | 1 line
Minor fix for currentframe (SF #1652788).
........
r53818 | raymond.hettinger | 2007-02-19 03:03:19 +0100 (Mon, 19 Feb 2007) | 3 lines
Extend work on revision 52962: Eliminate redundant calls to PyObject_Hash().
........
r53820 | raymond.hettinger | 2007-02-19 05:08:43 +0100 (Mon, 19 Feb 2007) | 1 line
Add merge() function to heapq.
........
r53821 | raymond.hettinger | 2007-02-19 06:28:28 +0100 (Mon, 19 Feb 2007) | 1 line
Add tie-breaker count to preserve sort stability.
........
r53822 | raymond.hettinger | 2007-02-19 07:59:32 +0100 (Mon, 19 Feb 2007) | 1 line
Use C heapreplace() instead of slower _siftup() in pure python.
........
r53823 | raymond.hettinger | 2007-02-19 08:30:21 +0100 (Mon, 19 Feb 2007) | 1 line
Add test for merge stability
........
r53824 | raymond.hettinger | 2007-02-19 10:14:10 +0100 (Mon, 19 Feb 2007) | 1 line
Provide an example of defaultdict with non-zero constant factory function.
........
r53825 | lars.gustaebel | 2007-02-19 10:54:47 +0100 (Mon, 19 Feb 2007) | 2 lines
Moved misplaced news item.
........
r53826 | martin.v.loewis | 2007-02-19 11:55:19 +0100 (Mon, 19 Feb 2007) | 3 lines
Patch #1490190: posixmodule now includes os.chflags() and os.lchflags()
functions on platforms where the underlying system calls are available.
........
r53827 | raymond.hettinger | 2007-02-19 19:15:04 +0100 (Mon, 19 Feb 2007) | 1 line
Fixup docstrings for merge().
........
r53829 | raymond.hettinger | 2007-02-19 21:44:04 +0100 (Mon, 19 Feb 2007) | 1 line
Fixup set/dict interoperability.
........
r53837 | raymond.hettinger | 2007-02-21 06:20:38 +0100 (Wed, 21 Feb 2007) | 1 line
Add itertools.izip_longest().
........
r53838 | raymond.hettinger | 2007-02-21 18:22:05 +0100 (Wed, 21 Feb 2007) | 1 line
Remove filler struct item and fix leak.
........
2007-02-23 11:07:44 -04:00
|
|
|
|
def merge(*iterables):
|
|
|
|
|
'''Merge multiple sorted inputs into a single sorted output.
|
|
|
|
|
|
|
|
|
|
Similar to sorted(itertools.chain(*iterables)) but returns an iterable,
|
|
|
|
|
does not pull the data into memory all at once, and assumes that each of
|
|
|
|
|
the input streams is already sorted (smallest to largest).
|
|
|
|
|
|
|
|
|
|
>>> list(merge([1,3,5,7], [0,2,4,8], [5,10,15,20], [], [25]))
|
|
|
|
|
[0, 1, 2, 3, 4, 5, 5, 7, 8, 10, 15, 20, 25]
|
|
|
|
|
|
|
|
|
|
'''
|
|
|
|
|
_heappop, _heapreplace, _StopIteration = heappop, heapreplace, StopIteration
|
|
|
|
|
|
|
|
|
|
h = []
|
|
|
|
|
h_append = h.append
|
|
|
|
|
for itnum, it in enumerate(map(iter, iterables)):
|
|
|
|
|
try:
|
|
|
|
|
next = it.next
|
|
|
|
|
h_append([next(), itnum, next])
|
|
|
|
|
except _StopIteration:
|
|
|
|
|
pass
|
|
|
|
|
heapify(h)
|
|
|
|
|
|
|
|
|
|
while 1:
|
|
|
|
|
try:
|
|
|
|
|
while 1:
|
|
|
|
|
v, itnum, next = s = h[0] # raises IndexError when h is empty
|
|
|
|
|
yield v
|
|
|
|
|
s[0] = next() # raises StopIteration when exhausted
|
|
|
|
|
_heapreplace(h, s) # restore heap condition
|
|
|
|
|
except _StopIteration:
|
|
|
|
|
_heappop(h) # remove empty iterator
|
|
|
|
|
except IndexError:
|
|
|
|
|
return
|
|
|
|
|
|
2004-12-02 04:59:14 -04:00
|
|
|
|
# Extend the implementations of nsmallest and nlargest to use a key= argument
|
|
|
|
|
_nsmallest = nsmallest
|
|
|
|
|
def nsmallest(n, iterable, key=None):
|
|
|
|
|
"""Find the n smallest elements in a dataset.
|
|
|
|
|
|
|
|
|
|
Equivalent to: sorted(iterable, key=key)[:n]
|
|
|
|
|
"""
|
|
|
|
|
in1, in2 = tee(iterable)
|
|
|
|
|
it = izip(imap(key, in1), count(), in2) # decorate
|
|
|
|
|
result = _nsmallest(n, it)
|
|
|
|
|
return map(itemgetter(2), result) # undecorate
|
|
|
|
|
|
|
|
|
|
_nlargest = nlargest
|
|
|
|
|
def nlargest(n, iterable, key=None):
|
|
|
|
|
"""Find the n largest elements in a dataset.
|
|
|
|
|
|
|
|
|
|
Equivalent to: sorted(iterable, key=key, reverse=True)[:n]
|
|
|
|
|
"""
|
|
|
|
|
in1, in2 = tee(iterable)
|
Merged revisions 53005-53303 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r53012 | walter.doerwald | 2006-12-12 22:55:31 +0100 (Tue, 12 Dec 2006) | 2 lines
Fix typo.
........
r53023 | brett.cannon | 2006-12-13 23:31:37 +0100 (Wed, 13 Dec 2006) | 2 lines
Remove an unneeded import of 'warnings'.
........
r53025 | brett.cannon | 2006-12-14 00:02:38 +0100 (Thu, 14 Dec 2006) | 2 lines
Remove unneeded imports of 'warnings'.
........
r53026 | brett.cannon | 2006-12-14 00:09:53 +0100 (Thu, 14 Dec 2006) | 4 lines
Add test.test_support.guard_warnings_filter . This function returns a context
manager that protects warnings.filter from being modified once the context is
exited.
........
r53029 | george.yoshida | 2006-12-14 03:22:44 +0100 (Thu, 14 Dec 2006) | 2 lines
Note that guard_warnings_filter was added in 2.6
........
r53031 | vinay.sajip | 2006-12-14 09:53:55 +0100 (Thu, 14 Dec 2006) | 1 line
Added news on recent changes to logging
........
r53032 | andrew.kuchling | 2006-12-14 19:57:53 +0100 (Thu, 14 Dec 2006) | 1 line
[Patch #1599256 from David Watson] check that os.fsync is available before using it
........
r53042 | kurt.kaiser | 2006-12-15 06:13:11 +0100 (Fri, 15 Dec 2006) | 6 lines
1. Avoid hang when encountering a duplicate in a completion list. Bug 1571112.
2. Duplicate some old entries from Python's NEWS to IDLE's NEWS.txt
M AutoCompleteWindow.py
M NEWS.txt
........
r53048 | andrew.kuchling | 2006-12-18 18:12:31 +0100 (Mon, 18 Dec 2006) | 1 line
[Bug #1618083] Add missing word; make a few grammar fixes
........
r53050 | andrew.kuchling | 2006-12-18 18:16:05 +0100 (Mon, 18 Dec 2006) | 1 line
Bump version
........
r53051 | andrew.kuchling | 2006-12-18 18:22:07 +0100 (Mon, 18 Dec 2006) | 1 line
[Bug #1616726] Fix description of generator.close(); if you raise some random exception, the exception is raised and doesn't trigger a RuntimeError
........
r53052 | andrew.kuchling | 2006-12-18 18:38:14 +0100 (Mon, 18 Dec 2006) | 1 line
Describe new methods in Queue module
........
r53053 | andrew.kuchling | 2006-12-18 20:22:24 +0100 (Mon, 18 Dec 2006) | 1 line
[Patch #1615868 by Lars Gustaebel] Use Py_off_t to fix BZ2File.seek() for offsets > 2Gb
........
r53057 | andrew.kuchling | 2006-12-18 22:29:07 +0100 (Mon, 18 Dec 2006) | 1 line
Fix markup
........
r53063 | thomas.wouters | 2006-12-19 09:17:50 +0100 (Tue, 19 Dec 2006) | 5 lines
Make sre's SubPattern objects accept slice objects like it already accepts
simple slices.
........
r53065 | andrew.kuchling | 2006-12-19 15:13:05 +0100 (Tue, 19 Dec 2006) | 6 lines
[Patch #1618455 by Ben Maurer] Improve speed of HMAC by using str.translate()
instead of a more general XOR that has to construct a list.
Slightly modified from Maurer's patch: the _strxor() function is no longer
necessary at all.
........
r53066 | andrew.kuchling | 2006-12-19 15:28:23 +0100 (Tue, 19 Dec 2006) | 9 lines
[Bug #1613651] Document socket.recv_into, socket.recvfrom_into
Also, the text for recvfrom told you to read recv() for an explanation of the
'flags' argument, but recv() just pointed you at the man page. Copied the
man-page text to recvfrom(), recvfrom_into, recv_into to avoid the pointless
redirection.
I don't have LaTeX on this machine; hope my markup is OK.
........
r53067 | andrew.kuchling | 2006-12-19 15:29:04 +0100 (Tue, 19 Dec 2006) | 1 line
Comment typo
........
r53068 | andrew.kuchling | 2006-12-19 16:11:41 +0100 (Tue, 19 Dec 2006) | 1 line
[Patch #1617413 from Dug Song] Fix HTTP Basic authentication via HTTPS
........
r53071 | andrew.kuchling | 2006-12-19 16:18:12 +0100 (Tue, 19 Dec 2006) | 1 line
[Patch #1600491 from Jim Jewett] Describe how to build help files on Windows
........
r53073 | andrew.kuchling | 2006-12-19 16:43:10 +0100 (Tue, 19 Dec 2006) | 6 lines
[Patch #1587139 by kxroberto] Protect lock acquisition/release with
try...finally to ensure the lock is always released. This could use
the 'with' statement, but the patch uses 'finally'.
2.5 backport candidate.
........
r53074 | vinay.sajip | 2006-12-19 19:29:11 +0100 (Tue, 19 Dec 2006) | 1 line
Updated documentation for findCaller() to indicate that a 3-tuple is now returned, rather than a 2-tuple.
........
r53090 | georg.brandl | 2006-12-19 23:06:46 +0100 (Tue, 19 Dec 2006) | 3 lines
Patch #1484695: The tarfile module now raises a HeaderError exception
if a buffer given to frombuf() is invalid.
........
r53099 | raymond.hettinger | 2006-12-20 07:42:06 +0100 (Wed, 20 Dec 2006) | 5 lines
Bug #1590891: random.randrange don't return correct value for big number
Needs to be backported.
........
r53106 | georg.brandl | 2006-12-20 12:55:16 +0100 (Wed, 20 Dec 2006) | 3 lines
Testcase for patch #1484695.
........
r53110 | andrew.kuchling | 2006-12-20 20:48:20 +0100 (Wed, 20 Dec 2006) | 17 lines
[Apply length-checking.diff from bug #1599254]
Add length checking to single-file mailbox formats: before doing a
flush() on a mailbox, seek to the end and verify its length is
unchanged, raising ExternalClashError if the file's length has
changed.
This fix avoids potential data loss if some other process appends to
the mailbox file after the table of contents has been generated;
instead of overwriting the modified file, you'll get the exception.
I also noticed that the self._lookup() call in self.flush() wasn't
necessary (everything that sets self._pending to True also calls
self.lookup()), and replaced it by an assertion.
2.5 backport candidate.
........
r53112 | andrew.kuchling | 2006-12-20 20:57:10 +0100 (Wed, 20 Dec 2006) | 1 line
[Bug #1619674] Make sum() use the term iterable, not sequence
........
r53113 | andrew.kuchling | 2006-12-20 20:58:11 +0100 (Wed, 20 Dec 2006) | 1 line
Two grammar fixes
........
r53115 | andrew.kuchling | 2006-12-20 21:11:12 +0100 (Wed, 20 Dec 2006) | 5 lines
Some other built-in functions are described with 'sequence' arguments
that should really be 'iterable'; this commit changes them.
Did I miss any? Did I introduce any errors?
........
r53117 | andrew.kuchling | 2006-12-20 21:20:42 +0100 (Wed, 20 Dec 2006) | 1 line
[Bug #1619680] in_dll() arguments are documented in the wrong order
........
r53120 | neal.norwitz | 2006-12-21 05:38:00 +0100 (Thu, 21 Dec 2006) | 1 line
Lars asked for permission on on python-dev for work on tarfile.py
........
r53125 | andrew.kuchling | 2006-12-21 14:40:29 +0100 (Thu, 21 Dec 2006) | 1 line
Mention the os.SEEK_* constants
........
r53129 | walter.doerwald | 2006-12-21 19:06:30 +0100 (Thu, 21 Dec 2006) | 2 lines
Fix typo.
........
r53131 | thomas.heller | 2006-12-21 19:30:56 +0100 (Thu, 21 Dec 2006) | 3 lines
Fix wrong markup of an argument in a method signature.
Will backport.
........
r53137 | andrew.kuchling | 2006-12-22 01:50:56 +0100 (Fri, 22 Dec 2006) | 1 line
Typo fix
........
r53139 | andrew.kuchling | 2006-12-22 14:25:02 +0100 (Fri, 22 Dec 2006) | 1 line
[Bug #737202; fix from Titus Brown] Make CGIHTTPServer work for scripts in sub-directories
........
r53141 | andrew.kuchling | 2006-12-22 16:04:45 +0100 (Fri, 22 Dec 2006) | 6 lines
[Bug #802128] Make the mode argument of dumbdbm actually work the way it's
described, and add a test for it.
2.5 bugfix candidate, maybe; arguably this patch changes the API of
dumbdbm and shouldn't be added in a point-release.
........
r53142 | andrew.kuchling | 2006-12-22 16:16:58 +0100 (Fri, 22 Dec 2006) | 6 lines
[Bug #802128 continued] Modify mode depending on the process umask.
Is there really no other way to read the umask than to set it?
Hope this works on Windows...
........
r53145 | andrew.kuchling | 2006-12-22 17:43:26 +0100 (Fri, 22 Dec 2006) | 1 line
[Bug #776202] Apply Walter Doerwald's patch to use text mode for encoded files
........
r53146 | andrew.kuchling | 2006-12-22 19:41:42 +0100 (Fri, 22 Dec 2006) | 9 lines
[Patch #783050 from Patrick Lynch] The emulation of forkpty() is incorrect;
the master should close the slave fd.
Added a test to test_pty.py that reads from the master_fd after doing
a pty.fork(); without the fix it hangs forever instead of raising an
exception. (<crossing fingers for the buildbots>)
2.5 backport candidate.
........
r53147 | andrew.kuchling | 2006-12-22 20:06:16 +0100 (Fri, 22 Dec 2006) | 1 line
[Patch #827559 from Chris Gonnerman] Make SimpleHTTPServer redirect when a directory URL is missing the trailing slash; this lets relative links work.
........
r53149 | andrew.kuchling | 2006-12-22 20:21:27 +0100 (Fri, 22 Dec 2006) | 1 line
Darn; this test works when you run test_pty.py directly, but fails when regrtest runs it (the os.read() raises os.error). I can't figure out the cause, so am commenting out the test.
........
r53150 | andrew.kuchling | 2006-12-22 22:48:19 +0100 (Fri, 22 Dec 2006) | 1 line
Frak; this test also fails
........
r53153 | lars.gustaebel | 2006-12-23 17:40:13 +0100 (Sat, 23 Dec 2006) | 5 lines
Patch #1230446: tarfile.py: fix ExFileObject so that read() and tell()
work correctly together with readline().
Will backport to 2.5.
........
r53155 | lars.gustaebel | 2006-12-23 18:57:23 +0100 (Sat, 23 Dec 2006) | 5 lines
Patch #1262036: Prevent TarFiles from being added to themselves under
certain conditions.
Will backport to 2.5.
........
r53159 | andrew.kuchling | 2006-12-27 04:25:31 +0100 (Wed, 27 Dec 2006) | 4 lines
[Part of patch #1182394] Move the HMAC blocksize to be a class-level
constant; this allows changing it in a subclass. To accommodate this,
copy() now uses __class__. Also add some text to a comment.
........
r53160 | andrew.kuchling | 2006-12-27 04:31:24 +0100 (Wed, 27 Dec 2006) | 1 line
[Rest of patch #1182394] Add ._current() method so that we can use the written-in-C .hexdigest() method
........
r53161 | lars.gustaebel | 2006-12-27 11:30:46 +0100 (Wed, 27 Dec 2006) | 4 lines
Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj argument.
Will backport to 2.5.
........
r53165 | neal.norwitz | 2006-12-28 05:39:20 +0100 (Thu, 28 Dec 2006) | 1 line
Remove a stray (old) macro name left around (I guess)
........
r53188 | neal.norwitz | 2006-12-29 04:01:53 +0100 (Fri, 29 Dec 2006) | 1 line
SF bug #1623890, fix argument name in docstring
........
r53200 | raymond.hettinger | 2006-12-30 05:01:17 +0100 (Sat, 30 Dec 2006) | 1 line
For sets with cyclical reprs, emit an ellipsis instead of infinitely recursing.
........
r53232 | brett.cannon | 2007-01-04 01:23:49 +0100 (Thu, 04 Jan 2007) | 3 lines
Add EnvironmentVarGuard to test.test_support. Provides a context manager to
temporarily set or unset environment variables.
........
r53235 | neal.norwitz | 2007-01-04 07:25:31 +0100 (Thu, 04 Jan 2007) | 1 line
SF #1627373, fix typo in CarbonEvt.
........
r53244 | raymond.hettinger | 2007-01-04 18:53:34 +0100 (Thu, 04 Jan 2007) | 1 line
Fix stability of heapq's nlargest() and nsmallest().
........
r53249 | martin.v.loewis | 2007-01-04 22:06:12 +0100 (Thu, 04 Jan 2007) | 3 lines
Bug #1566280: Explicitly invoke threading._shutdown from Py_Main,
to avoid relying on atexit.
Will backport to 2.5.
........
r53252 | gregory.p.smith | 2007-01-05 02:59:42 +0100 (Fri, 05 Jan 2007) | 3 lines
Support linking of the bsddb module against BerkeleyDB 4.5.x
(will backport to 2.5)
........
r53253 | gregory.p.smith | 2007-01-05 03:06:17 +0100 (Fri, 05 Jan 2007) | 2 lines
bump module version to match supported berkeleydb version
........
r53255 | neal.norwitz | 2007-01-05 06:25:22 +0100 (Fri, 05 Jan 2007) | 6 lines
Prevent crash on shutdown which can occur if we are finalizing
and the module dict has been cleared already and some object
raises a warning (like in a __del__).
Will backport.
........
r53258 | gregory.p.smith | 2007-01-05 08:21:35 +0100 (Fri, 05 Jan 2007) | 2 lines
typo fix
........
r53260 | neal.norwitz | 2007-01-05 09:06:43 +0100 (Fri, 05 Jan 2007) | 1 line
Add Collin Winter for access to update PEP 3107
........
r53262 | andrew.kuchling | 2007-01-05 15:22:17 +0100 (Fri, 05 Jan 2007) | 1 line
[Bug #1622533] Make docstrings raw strings because they contain control characters (\0, \1)
........
r53264 | andrew.kuchling | 2007-01-05 16:51:24 +0100 (Fri, 05 Jan 2007) | 1 line
[Patch #1520904] Fix bsddb tests to write to the temp directory instead of the Lib/bsddb/test directory
........
r53279 | brett.cannon | 2007-01-05 22:45:09 +0100 (Fri, 05 Jan 2007) | 3 lines
Silence a warning from gcc 4.0.1 by specifying a function's parameter list is
'void' instead of just a set of empty parentheses.
........
r53285 | raymond.hettinger | 2007-01-06 02:14:41 +0100 (Sat, 06 Jan 2007) | 2 lines
SF# 1409443: Expand comment to cover the interaction between f->f_lasti and the PREDICT macros.
........
r53286 | anthony.baxter | 2007-01-06 05:45:54 +0100 (Sat, 06 Jan 2007) | 1 line
update to (c) years to include 2007
........
r53291 | neal.norwitz | 2007-01-06 22:24:35 +0100 (Sat, 06 Jan 2007) | 1 line
Add Josiah to SF for maintaining asyncore/asynchat
........
r53293 | peter.astrand | 2007-01-07 09:53:46 +0100 (Sun, 07 Jan 2007) | 1 line
Re-implemented fix for #1531862 once again, in a way that works with Python 2.2. Fixes bug #1603424.
........
r53295 | peter.astrand | 2007-01-07 15:34:16 +0100 (Sun, 07 Jan 2007) | 1 line
Avoid O(N**2) bottleneck in _communicate_(). Fixes #1598181.
........
r53300 | raymond.hettinger | 2007-01-08 19:09:20 +0100 (Mon, 08 Jan 2007) | 1 line
Fix zero-length corner case for iterating over a mutating deque.
........
r53301 | vinay.sajip | 2007-01-08 19:50:32 +0100 (Mon, 08 Jan 2007) | 4 lines
Bare except clause removed from SMTPHandler.emit(). Now, only ImportError is trapped.
Bare except clause removed from SocketHandler.createSocket(). Now, only socket.error is trapped.
(SF #411881)
........
r53302 | vinay.sajip | 2007-01-08 19:51:46 +0100 (Mon, 08 Jan 2007) | 2 lines
Bare except clause removed from LogRecord.__init__. Now, only ValueError, TypeError and AttributeError are trapped.
(SF #411881)
........
r53303 | vinay.sajip | 2007-01-08 19:52:36 +0100 (Mon, 08 Jan 2007) | 1 line
Added entries about removal of some bare except clauses from logging.
........
2007-01-09 19:18:33 -04:00
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it = izip(imap(key, in1), imap(neg, count()), in2) # decorate
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2004-12-02 04:59:14 -04:00
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result = _nlargest(n, it)
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return map(itemgetter(2), result) # undecorate
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2004-04-19 16:06:21 -03:00
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if __name__ == "__main__":
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# Simple sanity test
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heap = []
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data = [1, 3, 5, 7, 9, 2, 4, 6, 8, 0]
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for item in data:
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heappush(heap, item)
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sort = []
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while heap:
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sort.append(heappop(heap))
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2007-02-09 01:37:30 -04:00
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print(sort)
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Merged revisions 53623-53858 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r53624 | peter.astrand | 2007-02-02 20:06:36 +0100 (Fri, 02 Feb 2007) | 1 line
We had several if statements checking the value of a fd. This is unsafe, since valid fds might be zero. We should check for not None instead.
........
r53635 | kurt.kaiser | 2007-02-05 07:03:18 +0100 (Mon, 05 Feb 2007) | 2 lines
Add 'raw' support to configHandler. Patch 1650174 Tal Einat.
........
r53641 | kurt.kaiser | 2007-02-06 00:02:16 +0100 (Tue, 06 Feb 2007) | 5 lines
1. Calltips now 'handle' tuples in the argument list (display '<tuple>' :)
Suggested solution by Christos Georgiou, Bug 791968.
2. Clean up tests, were not failing when they should have been.
4. Remove some camelcase and an unneeded try/except block.
........
r53644 | kurt.kaiser | 2007-02-06 04:21:40 +0100 (Tue, 06 Feb 2007) | 2 lines
Clean up ModifiedInterpreter.runcode() structure
........
r53646 | peter.astrand | 2007-02-06 16:37:50 +0100 (Tue, 06 Feb 2007) | 1 line
Applied patch 1124861.3.patch to solve bug #1124861: Automatically create pipes on Windows, if GetStdHandle fails. Will backport.
........
r53648 | lars.gustaebel | 2007-02-06 19:38:13 +0100 (Tue, 06 Feb 2007) | 4 lines
Patch #1652681: create nonexistent files in append mode and
allow appending to empty files.
........
r53649 | kurt.kaiser | 2007-02-06 20:09:43 +0100 (Tue, 06 Feb 2007) | 4 lines
Updated patch (CodeContext.061217.patch) to
[ 1362975 ] CodeContext - Improved text indentation
Tal Einat 16Dec06
........
r53650 | kurt.kaiser | 2007-02-06 20:21:19 +0100 (Tue, 06 Feb 2007) | 2 lines
narrow exception per [ 1540849 ] except too broad
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r53653 | kurt.kaiser | 2007-02-07 04:39:41 +0100 (Wed, 07 Feb 2007) | 4 lines
[ 1621265 ] Auto-completion list placement
Move AC window below input line unless not enough space, then put it above.
Patch: Tal Einat
........
r53654 | kurt.kaiser | 2007-02-07 09:07:13 +0100 (Wed, 07 Feb 2007) | 2 lines
Handle AttributeError during calltip lookup
........
r53656 | raymond.hettinger | 2007-02-07 21:08:22 +0100 (Wed, 07 Feb 2007) | 3 lines
SF #1615701: make d.update(m) honor __getitem__() and keys() in dict subclasses
........
r53658 | raymond.hettinger | 2007-02-07 22:04:20 +0100 (Wed, 07 Feb 2007) | 1 line
SF: 1397711 Set docs conflated immutable and hashable
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r53660 | raymond.hettinger | 2007-02-07 22:42:17 +0100 (Wed, 07 Feb 2007) | 1 line
Check for a common user error with defaultdict().
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r53662 | raymond.hettinger | 2007-02-07 23:24:07 +0100 (Wed, 07 Feb 2007) | 1 line
Bug #1575169: operator.isSequenceType() now returns False for subclasses of dict.
........
r53664 | raymond.hettinger | 2007-02-08 00:49:03 +0100 (Thu, 08 Feb 2007) | 1 line
Silence compiler warning
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r53666 | raymond.hettinger | 2007-02-08 01:07:32 +0100 (Thu, 08 Feb 2007) | 1 line
Do not let overflows in enumerate() and count() pass silently.
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r53668 | raymond.hettinger | 2007-02-08 01:50:39 +0100 (Thu, 08 Feb 2007) | 1 line
Bypass set specific optimizations for set and frozenset subclasses.
........
r53670 | raymond.hettinger | 2007-02-08 02:42:35 +0100 (Thu, 08 Feb 2007) | 1 line
Fix docstring bug
........
r53671 | martin.v.loewis | 2007-02-08 10:13:36 +0100 (Thu, 08 Feb 2007) | 3 lines
Bug #1653736: Complain about keyword arguments to time.isoformat.
Will backport to 2.5.
........
r53679 | kurt.kaiser | 2007-02-08 23:58:18 +0100 (Thu, 08 Feb 2007) | 6 lines
Corrected some bugs in AutoComplete. Also, Page Up/Down in ACW implemented;
mouse and cursor selection in ACWindow implemented; double Tab inserts current
selection and closes ACW (similar to double-click and Return); scroll wheel now
works in ACW. Added AutoComplete instructions to IDLE Help.
........
r53689 | martin.v.loewis | 2007-02-09 13:19:32 +0100 (Fri, 09 Feb 2007) | 3 lines
Bug #1653736: Properly discard third argument to slot_nb_inplace_power.
Will backport.
........
r53691 | martin.v.loewis | 2007-02-09 13:36:48 +0100 (Fri, 09 Feb 2007) | 4 lines
Bug #1600860: Search for shared python library in LIBDIR, not
lib/python/config, on "linux" and "gnu" systems.
Will backport.
........
r53693 | martin.v.loewis | 2007-02-09 13:58:49 +0100 (Fri, 09 Feb 2007) | 2 lines
Update broken link. Will backport to 2.5.
........
r53697 | georg.brandl | 2007-02-09 19:48:41 +0100 (Fri, 09 Feb 2007) | 2 lines
Bug #1656078: typo in in profile docs.
........
r53731 | brett.cannon | 2007-02-11 06:36:00 +0100 (Sun, 11 Feb 2007) | 3 lines
Change a very minor inconsistency (that is purely cosmetic) in the AST
definition.
........
r53735 | skip.montanaro | 2007-02-11 19:24:37 +0100 (Sun, 11 Feb 2007) | 1 line
fix trace.py --ignore-dir
........
r53741 | brett.cannon | 2007-02-11 20:44:41 +0100 (Sun, 11 Feb 2007) | 3 lines
Check in changed Python-ast.c from a cosmetic change to Python.asdl (in
r53731).
........
r53751 | brett.cannon | 2007-02-12 04:51:02 +0100 (Mon, 12 Feb 2007) | 5 lines
Modify Parser/asdl_c.py so that the __version__ number for Python/Python-ast.c
is specified at the top of the file. Also add a note that Python/Python-ast.c
needs to be committed separately after a change to the AST grammar to capture
the revision number of the change (which is what __version__ is set to).
........
r53752 | lars.gustaebel | 2007-02-12 10:25:53 +0100 (Mon, 12 Feb 2007) | 3 lines
Bug #1656581: Point out that external file objects are supposed to be
at position 0.
........
r53754 | martin.v.loewis | 2007-02-12 13:21:10 +0100 (Mon, 12 Feb 2007) | 3 lines
Patch 1463026: Support default namespace in XMLGenerator.
Fixes #847665. Will backport.
........
r53757 | armin.rigo | 2007-02-12 17:23:24 +0100 (Mon, 12 Feb 2007) | 4 lines
Fix the line to what is my guess at the original author's meaning.
(The line has no effect anyway, but is present because it's
customary call the base class __init__).
........
r53763 | martin.v.loewis | 2007-02-13 09:34:45 +0100 (Tue, 13 Feb 2007) | 3 lines
Patch #685268: Consider a package's __path__ in imputil.
Will backport.
........
r53765 | martin.v.loewis | 2007-02-13 10:49:38 +0100 (Tue, 13 Feb 2007) | 2 lines
Patch #698833: Support file decryption in zipfile.
........
r53766 | martin.v.loewis | 2007-02-13 11:10:39 +0100 (Tue, 13 Feb 2007) | 3 lines
Patch #1517891: Make 'a' create the file if it doesn't exist.
Fixes #1514451.
........
r53767 | martin.v.loewis | 2007-02-13 13:08:24 +0100 (Tue, 13 Feb 2007) | 3 lines
Bug #1658794: Remove extraneous 'this'.
Will backport to 2.5.
........
r53769 | martin.v.loewis | 2007-02-13 13:14:19 +0100 (Tue, 13 Feb 2007) | 3 lines
Patch #1657276: Make NETLINK_DNRTMSG conditional.
Will backport.
........
r53771 | lars.gustaebel | 2007-02-13 17:09:24 +0100 (Tue, 13 Feb 2007) | 4 lines
Patch #1647484: Renamed GzipFile's filename attribute to name. The
filename attribute is still accessible as a property that emits a
DeprecationWarning.
........
r53772 | lars.gustaebel | 2007-02-13 17:24:00 +0100 (Tue, 13 Feb 2007) | 3 lines
Strip the '.gz' extension from the filename that is written to the
gzip header.
........
r53774 | martin.v.loewis | 2007-02-14 11:07:37 +0100 (Wed, 14 Feb 2007) | 2 lines
Patch #1432399: Add HCI sockets.
........
r53775 | martin.v.loewis | 2007-02-14 12:30:07 +0100 (Wed, 14 Feb 2007) | 2 lines
Update 1432399 to removal of _BT_SOCKADDR_MEMB.
........
r53776 | martin.v.loewis | 2007-02-14 12:30:56 +0100 (Wed, 14 Feb 2007) | 3 lines
Ignore directory time stamps when considering
whether to rerun libffi configure.
........
r53778 | lars.gustaebel | 2007-02-14 15:45:12 +0100 (Wed, 14 Feb 2007) | 4 lines
A missing binary mode in AppendTest caused failures in Windows
Buildbot.
........
r53782 | martin.v.loewis | 2007-02-15 10:51:35 +0100 (Thu, 15 Feb 2007) | 2 lines
Patch #1397848: add the reasoning behind no-resize-on-shrinkage.
........
r53783 | georg.brandl | 2007-02-15 11:37:59 +0100 (Thu, 15 Feb 2007) | 2 lines
Make functools.wraps() docs a bit clearer.
........
r53785 | georg.brandl | 2007-02-15 12:29:04 +0100 (Thu, 15 Feb 2007) | 2 lines
Patch #1494140: Add documentation for the new struct.Struct object.
........
r53787 | georg.brandl | 2007-02-15 12:29:55 +0100 (Thu, 15 Feb 2007) | 2 lines
Add missing \versionadded.
........
r53800 | brett.cannon | 2007-02-15 23:54:39 +0100 (Thu, 15 Feb 2007) | 11 lines
Update the encoding package's search function to use absolute imports when
calling __import__. This helps make the expected search locations for encoding
modules be more explicit.
One could use an explicit value for __path__ when making the call to __import__
to force the exact location searched for encodings. This would give the most
strict search path possible if one is worried about malicious code being
imported. The unfortunate side-effect of that is that if __path__ was modified
on 'encodings' on purpose in a safe way it would not be picked up in future
__import__ calls.
........
r53801 | brett.cannon | 2007-02-16 20:33:01 +0100 (Fri, 16 Feb 2007) | 2 lines
Make the __import__ call in encodings.__init__ absolute with a level 0 call.
........
r53809 | vinay.sajip | 2007-02-16 23:36:24 +0100 (Fri, 16 Feb 2007) | 1 line
Minor fix for currentframe (SF #1652788).
........
r53818 | raymond.hettinger | 2007-02-19 03:03:19 +0100 (Mon, 19 Feb 2007) | 3 lines
Extend work on revision 52962: Eliminate redundant calls to PyObject_Hash().
........
r53820 | raymond.hettinger | 2007-02-19 05:08:43 +0100 (Mon, 19 Feb 2007) | 1 line
Add merge() function to heapq.
........
r53821 | raymond.hettinger | 2007-02-19 06:28:28 +0100 (Mon, 19 Feb 2007) | 1 line
Add tie-breaker count to preserve sort stability.
........
r53822 | raymond.hettinger | 2007-02-19 07:59:32 +0100 (Mon, 19 Feb 2007) | 1 line
Use C heapreplace() instead of slower _siftup() in pure python.
........
r53823 | raymond.hettinger | 2007-02-19 08:30:21 +0100 (Mon, 19 Feb 2007) | 1 line
Add test for merge stability
........
r53824 | raymond.hettinger | 2007-02-19 10:14:10 +0100 (Mon, 19 Feb 2007) | 1 line
Provide an example of defaultdict with non-zero constant factory function.
........
r53825 | lars.gustaebel | 2007-02-19 10:54:47 +0100 (Mon, 19 Feb 2007) | 2 lines
Moved misplaced news item.
........
r53826 | martin.v.loewis | 2007-02-19 11:55:19 +0100 (Mon, 19 Feb 2007) | 3 lines
Patch #1490190: posixmodule now includes os.chflags() and os.lchflags()
functions on platforms where the underlying system calls are available.
........
r53827 | raymond.hettinger | 2007-02-19 19:15:04 +0100 (Mon, 19 Feb 2007) | 1 line
Fixup docstrings for merge().
........
r53829 | raymond.hettinger | 2007-02-19 21:44:04 +0100 (Mon, 19 Feb 2007) | 1 line
Fixup set/dict interoperability.
........
r53837 | raymond.hettinger | 2007-02-21 06:20:38 +0100 (Wed, 21 Feb 2007) | 1 line
Add itertools.izip_longest().
........
r53838 | raymond.hettinger | 2007-02-21 18:22:05 +0100 (Wed, 21 Feb 2007) | 1 line
Remove filler struct item and fix leak.
........
2007-02-23 11:07:44 -04:00
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import doctest
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doctest.testmod()
|