Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61081-61095 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

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  r61081 | neal.norwitz | 2008-02-26 09:04:59 +0100 (Tue, 26 Feb 2008) | 7 lines

  Speed up this test by about 99%.  Remove sleeps and replace with events.
  (This may fail on some slow platforms, but we can fix those cases which
  should be relatively isolated and easier to find now.)
  Move two test cases that didn't require a server to be started
  to a separate TestCase.  These tests were taking 3 seconds which
  is what the timeout was set to.
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  r61082 | christian.heimes | 2008-02-26 09:18:11 +0100 (Tue, 26 Feb 2008) | 1 line

  The contains function raised a gcc warning. The new code is copied straight from py3k.
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  r61084 | neal.norwitz | 2008-02-26 09:21:28 +0100 (Tue, 26 Feb 2008) | 3 lines

  Add a timing flag to Trace so you can see where slowness occurs
  like waiting for socket timeouts in test_smtplib :-).
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  r61086 | christian.heimes | 2008-02-26 18:23:51 +0100 (Tue, 26 Feb 2008) | 3 lines

  Patch #1691070 from Roger Upole: Speed up PyArg_ParseTupleAndKeywords() and improve error msg
  My tests don't show the promised speed up of 10%. The code is as fast as the old code for simple cases and slightly faster for complex cases with several of args and kwargs. But the patch simplifies the code, too.
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  r61087 | georg.brandl | 2008-02-26 20:13:45 +0100 (Tue, 26 Feb 2008) | 2 lines

  #2194: fix some typos.
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  r61088 | raymond.hettinger | 2008-02-27 00:40:50 +0100 (Wed, 27 Feb 2008) | 1 line

  Add itertools.combinations().
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  r61089 | raymond.hettinger | 2008-02-27 02:08:04 +0100 (Wed, 27 Feb 2008) | 1 line

  One too many decrefs.
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  r61090 | raymond.hettinger | 2008-02-27 02:08:30 +0100 (Wed, 27 Feb 2008) | 1 line

  Larger test range
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  r61091 | raymond.hettinger | 2008-02-27 02:44:34 +0100 (Wed, 27 Feb 2008) | 1 line

  Simply the sample code for combinations().
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2 files changed, 16 insertions, 16 deletions

diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index d04f33b..826fa45 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -95,21 +95,20 @@ loops that truncate the stream.
 
         def combinations(iterable, r):
             pool = tuple(iterable)
-            if pool:
-                n = len(pool)
-                vec = range(r)
-                yield tuple(pool[i] for i in vec)
-                while 1:
-                    for i in reversed(range(r)):
-                        if vec[i] == i + n-r:
-                            continue
-                        vec[i] += 1
-                        for j in range(i+1, r):
-                            vec[j] = vec[j-1] + 1
-                        yield tuple(pool[i] for i in vec)
+            n = len(pool)
+            assert 0 <= r <= n
+            vec = range(r)
+            yield tuple(pool[i] for i in vec)
+            while 1:
+                for i in reversed(range(r)):
+                    if vec[i] != i + n - r:
                         break
-                    else:
-                        return
+                else:
+                    return
+                vec[i] += 1
+                for j in range(i+1, r):
+                    vec[j] = vec[j-1] + 1
+                yield tuple(pool[i] for i in vec)
 
    .. versionadded:: 2.6
 
diff --git a/Doc/library/trace.rst b/Doc/library/trace.rst
index 9d0c0c4..05d5d66 100644
--- a/Doc/library/trace.rst
+++ b/Doc/library/trace.rst
@@ -80,7 +80,7 @@ Programming Interface
 ---------------------
 
 
-.. class:: Trace([count=1[, trace=1[, countfuncs=0[, countcallers=0[, ignoremods=()[, ignoredirs=()[, infile=None[, outfile=None]]]]]]]])
+.. class:: Trace([count=1[, trace=1[, countfuncs=0[, countcallers=0[, ignoremods=()[, ignoredirs=()[, infile=None[, outfile=None[, timing=False]]]]]]]]])
 
    Create an object to trace execution of a single statement or expression. All
    parameters are optional.  *count* enables counting of line numbers. *trace*
@@ -89,7 +89,8 @@ Programming Interface
    *ignoremods* is a list of modules or packages to ignore.  *ignoredirs* is a list
    of directories whose modules or packages should be ignored.  *infile* is the
    file from which to read stored count information.  *outfile* is a file in which
-   to write updated count information.
+   to write updated count information. *timing* enables a timestamp relative
+   to when tracing was started to be displayed.
 
 
 .. method:: Trace.run(cmd)