summaryrefslogtreecommitdiffstats
path: root/Doc
diff options
context:
space:
mode:
authorGeorg Brandl <georg@python.org>2008-07-23 16:10:53 (GMT)
committerGeorg Brandl <georg@python.org>2008-07-23 16:10:53 (GMT)
commit3dbca81c9b7903e8d808089a6a76dc97807b3df3 (patch)
treea58e68eeadfebe5797dc830e3ce20352118174bb /Doc
parent4f6f34fb0b7c1048b238062015f3fef7372a911f (diff)
downloadcpython-3dbca81c9b7903e8d808089a6a76dc97807b3df3.zip
cpython-3dbca81c9b7903e8d808089a6a76dc97807b3df3.tar.gz
cpython-3dbca81c9b7903e8d808089a6a76dc97807b3df3.tar.bz2
Merged revisions 65012,65035,65037-65040,65048,65057,65077,65091-65095,65097-65099,65127-65128,65131,65133-65136,65139,65149-65151,65155,65158-65159,65176-65178,65183-65184,65187-65190,65192,65194 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk ........ r65012 | jesse.noller | 2008-07-16 15:24:06 +0200 (Wed, 16 Jul 2008) | 2 lines Apply patch for issue 3090: ARCHFLAGS parsing incorrect ........ r65035 | georg.brandl | 2008-07-16 23:19:28 +0200 (Wed, 16 Jul 2008) | 2 lines #3045: fix pydoc behavior for TEMP path with spaces. ........ r65037 | georg.brandl | 2008-07-16 23:31:41 +0200 (Wed, 16 Jul 2008) | 2 lines #1608818: errno can get set by every call to readdir(). ........ r65038 | georg.brandl | 2008-07-17 00:04:20 +0200 (Thu, 17 Jul 2008) | 2 lines #3305: self->stream can be NULL. ........ r65039 | georg.brandl | 2008-07-17 00:09:17 +0200 (Thu, 17 Jul 2008) | 2 lines #3345: fix docstring. ........ r65040 | georg.brandl | 2008-07-17 00:33:18 +0200 (Thu, 17 Jul 2008) | 2 lines #3312: fix two sqlite3 crashes. ........ r65048 | georg.brandl | 2008-07-17 01:35:54 +0200 (Thu, 17 Jul 2008) | 2 lines #3388: add a paragraph about using "with" for file objects. ........ r65057 | gregory.p.smith | 2008-07-17 05:13:05 +0200 (Thu, 17 Jul 2008) | 2 lines news note for r63052 ........ r65077 | jesse.noller | 2008-07-17 23:01:05 +0200 (Thu, 17 Jul 2008) | 3 lines Fix issue 3395, update _debugInfo to be _debug_info ........ r65091 | ronald.oussoren | 2008-07-18 07:48:03 +0200 (Fri, 18 Jul 2008) | 2 lines Last bit of a fix for issue3381 (addon for my patch in r65061) ........ r65092 | vinay.sajip | 2008-07-18 10:59:06 +0200 (Fri, 18 Jul 2008) | 1 line Issue #3389: Allow resolving dotted names for handlers in logging configuration files. Thanks to Philip Jenvey for the patch. ........ r65093 | vinay.sajip | 2008-07-18 11:00:00 +0200 (Fri, 18 Jul 2008) | 1 line Issue #3389: Allow resolving dotted names for handlers in logging configuration files. Thanks to Philip Jenvey for the patch. ........ r65094 | vinay.sajip | 2008-07-18 11:00:35 +0200 (Fri, 18 Jul 2008) | 1 line Issue #3389: Allow resolving dotted names for handlers in logging configuration files. Thanks to Philip Jenvey for the patch. ........ r65095 | vinay.sajip | 2008-07-18 11:01:10 +0200 (Fri, 18 Jul 2008) | 1 line Issue #3389: Allow resolving dotted names for handlers in logging configuration files. Thanks to Philip Jenvey for the patch. ........ r65097 | georg.brandl | 2008-07-18 12:20:59 +0200 (Fri, 18 Jul 2008) | 2 lines Remove duplicate entry in __all__. ........ r65098 | georg.brandl | 2008-07-18 12:29:30 +0200 (Fri, 18 Jul 2008) | 2 lines Correct attribute name. ........ r65099 | georg.brandl | 2008-07-18 13:15:06 +0200 (Fri, 18 Jul 2008) | 3 lines Document the different meaning of precision for {:f} and {:g}. Also document how inf and nan are formatted. #3404. ........ r65127 | raymond.hettinger | 2008-07-19 02:42:03 +0200 (Sat, 19 Jul 2008) | 1 line Improve accuracy of gamma test function ........ r65128 | raymond.hettinger | 2008-07-19 02:43:00 +0200 (Sat, 19 Jul 2008) | 1 line Add recipe to the itertools docs. ........ r65131 | georg.brandl | 2008-07-19 12:08:55 +0200 (Sat, 19 Jul 2008) | 2 lines #3378: in case of no memory, don't leak even more memory. :) ........ r65133 | georg.brandl | 2008-07-19 14:39:10 +0200 (Sat, 19 Jul 2008) | 3 lines #3302: fix segfaults when passing None for arguments that can't be NULL for the C functions. ........ r65134 | georg.brandl | 2008-07-19 14:46:12 +0200 (Sat, 19 Jul 2008) | 2 lines #3303: fix crash with invalid Py_DECREF in strcoll(). ........ r65135 | georg.brandl | 2008-07-19 15:00:22 +0200 (Sat, 19 Jul 2008) | 3 lines #3319: don't raise ZeroDivisionError if number of rounds is so low that benchtime is zero. ........ r65136 | georg.brandl | 2008-07-19 15:09:42 +0200 (Sat, 19 Jul 2008) | 3 lines #3323: mention that if inheriting from a class without __slots__, the subclass will have a __dict__ available too. ........ r65139 | georg.brandl | 2008-07-19 15:48:44 +0200 (Sat, 19 Jul 2008) | 2 lines Add ordering info for findall and finditer. ........ r65149 | raymond.hettinger | 2008-07-20 01:21:57 +0200 (Sun, 20 Jul 2008) | 1 line Fix compress() recipe in docs to use itertools. ........ r65150 | raymond.hettinger | 2008-07-20 01:58:47 +0200 (Sun, 20 Jul 2008) | 1 line Clean-up itertools docs and recipes. ........ r65151 | gregory.p.smith | 2008-07-20 02:22:08 +0200 (Sun, 20 Jul 2008) | 9 lines fix issue3120 - don't truncate handles on 64-bit Windows. This is still messy, realistically PC/_subprocess.c should never cast pointers to python numbers and back at all. I don't have a 64-bit windows build environment because microsoft apparently thinks that should cost money. Time to watch the buildbots. It builds and passes tests on 32-bit windows. ........ r65155 | georg.brandl | 2008-07-20 13:50:29 +0200 (Sun, 20 Jul 2008) | 2 lines #926501: add info where to put the docstring. ........ r65158 | neal.norwitz | 2008-07-20 21:35:23 +0200 (Sun, 20 Jul 2008) | 1 line Fix a couple of names in error messages that were wrong ........ r65159 | neal.norwitz | 2008-07-20 22:39:36 +0200 (Sun, 20 Jul 2008) | 1 line Fix misspeeld method name (negative) ........ r65176 | amaury.forgeotdarc | 2008-07-21 23:36:24 +0200 (Mon, 21 Jul 2008) | 4 lines Increment version number in NEWS file, and move items that were added after 2.6b2. (I thought there was a script to automate this kind of updates) ........ r65177 | amaury.forgeotdarc | 2008-07-22 00:00:38 +0200 (Tue, 22 Jul 2008) | 5 lines Issue2378: pdb would delete free variables when stepping into a class statement. The problem was introduced by r53954, the correction is to restore the symmetry between PyFrame_FastToLocals and PyFrame_LocalsToFast ........ r65178 | benjamin.peterson | 2008-07-22 00:05:34 +0200 (Tue, 22 Jul 2008) | 1 line don't use assert statement ........ r65183 | ronald.oussoren | 2008-07-22 09:06:00 +0200 (Tue, 22 Jul 2008) | 2 lines Fix buglet in fix for issue3381 ........ r65184 | ronald.oussoren | 2008-07-22 09:06:33 +0200 (Tue, 22 Jul 2008) | 2 lines Fix build issue on OSX 10.4, somehow this wasn't committed before. ........ r65187 | raymond.hettinger | 2008-07-22 20:54:02 +0200 (Tue, 22 Jul 2008) | 1 line Remove out-of-date section on Exact/Inexact. ........ r65188 | raymond.hettinger | 2008-07-22 21:00:47 +0200 (Tue, 22 Jul 2008) | 1 line Tuples now have both count() and index(). ........ r65189 | raymond.hettinger | 2008-07-22 21:03:05 +0200 (Tue, 22 Jul 2008) | 1 line Fix credits for math.sum() ........ r65190 | raymond.hettinger | 2008-07-22 21:18:50 +0200 (Tue, 22 Jul 2008) | 1 line One more attribution. ........ r65192 | benjamin.peterson | 2008-07-23 01:44:37 +0200 (Wed, 23 Jul 2008) | 1 line remove unneeded import ........ r65194 | benjamin.peterson | 2008-07-23 15:25:06 +0200 (Wed, 23 Jul 2008) | 1 line use isinstance ........
Diffstat (limited to 'Doc')
-rw-r--r--Doc/glossary.rst8
-rw-r--r--Doc/library/itertools.rst87
-rw-r--r--Doc/library/logging.rst6
-rw-r--r--Doc/library/re.rst15
-rw-r--r--Doc/library/string.rst20
-rw-r--r--Doc/reference/compound_stmts.rst19
-rw-r--r--Doc/reference/datamodel.rst4
-rw-r--r--Doc/tutorial/inputoutput.rst10
-rw-r--r--Doc/whatsnew/2.6.rst21
9 files changed, 107 insertions, 83 deletions
diff --git a/Doc/glossary.rst b/Doc/glossary.rst
index a2e9b02..ab11a83 100644
--- a/Doc/glossary.rst
+++ b/Doc/glossary.rst
@@ -100,6 +100,14 @@ Glossary
of :class:`dict` much resembles that for :class:`list`, but the keys can
be any object with a :meth:`__hash__` function, not just integers starting
from zero. Called a hash in Perl.
+
+ docstring
+ A docstring ("documentation string") is a string literal that appears as
+ the first thing in a class or function suite. While ignored when the
+ suite is executed, it is recognized by the compiler and put into the
+ :attr:`__doc__` attribute of the class or function. Since it is available
+ via introspection, it is the canonical place for documentation of the
+ object.
duck-typing
Pythonic programming style that determines an object's type by inspection
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index 63cace6..79a69ea 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -33,18 +33,11 @@ by combining :func:`map` and :func:`count` to form ``map(f, count())``.
Likewise, the functional tools are designed to work well with the high-speed
functions provided by the :mod:`operator` module.
-The module author welcomes suggestions for other basic building blocks to be
-added to future versions of the module.
-
Whether cast in pure python form or compiled code, tools that use iterators are
-more memory efficient (and faster) than their list based counterparts. Adopting
+more memory efficient (and often faster) than their list based counterparts. Adopting
the principles of just-in-time manufacturing, they create data when and where
needed instead of consuming memory with the computer equivalent of "inventory".
-The performance advantage of iterators becomes more acute as the number of
-elements increases -- at some point, lists grow large enough to severely impact
-memory cache performance and start running slowly.
-
.. seealso::
@@ -517,55 +510,35 @@ which incur interpreter overhead.
.. testcode::
- def take(n, seq):
- return list(islice(seq, n))
+ def take(n, iterable):
+ "Return first n items of the iterable as a list"
+ return list(islice(iterable, n))
- def enumerate(iterable):
- return zip(count(), iterable)
+ def enumerate(iterable, start=0):
+ return zip(count(start), iterable)
- def tabulate(function):
+ def tabulate(function, start=0):
"Return function(0), function(1), ..."
- return map(function, count())
-
- def items(mapping):
- return zip(mapping.keys(), mapping.values())
+ return map(function, count(start))
def nth(iterable, n):
- "Returns the nth item or raise StopIteration"
- return next(islice(iterable, n, None))
-
- def all(seq, pred=None):
- "Returns True if pred(x) is true for every element in the iterable"
- for elem in filterfalse(pred, seq):
- return False
- return True
-
- def any(seq, pred=None):
- "Returns True if pred(x) is true for at least one element in the iterable"
- for elem in filter(pred, seq):
- return True
- return False
-
- def no(seq, pred=None):
- "Returns True if pred(x) is false for every element in the iterable"
- for elem in filter(pred, seq):
- return False
- return True
-
- def quantify(seq, pred=None):
- "Count how many times the predicate is true in the sequence"
- return sum(map(pred, seq))
-
- def padnone(seq):
+ "Returns the nth item or empty list"
+ return list(islice(iterable, n, n+1))
+
+ def quantify(iterable, pred=bool):
+ "Count how many times the predicate is true"
+ return sum(map(pred, iterable))
+
+ def padnone(iterable):
"""Returns the sequence elements and then returns None indefinitely.
Useful for emulating the behavior of the built-in map() function.
"""
- return chain(seq, repeat(None))
+ return chain(iterable, repeat(None))
- def ncycles(seq, n):
+ def ncycles(iterable, n):
"Returns the sequence elements n times"
- return chain.from_iterable(repeat(seq, n))
+ return chain.from_iterable(repeat(iterable, n))
def dotproduct(vec1, vec2):
return sum(map(operator.mul, vec1, vec2))
@@ -616,7 +589,21 @@ which incur interpreter overhead.
def compress(data, selectors):
"compress('abcdef', [1,0,1,0,1,1]) --> a c e f"
- for d, s in zip(data, selectors):
- if s:
- yield d
-
+ decorated = zip(data, selectors)
+ filtered = filter(operator.itemgetter(1), decorated)
+ return map(operator.itemgetter(0), filtered)
+
+ def combinations_with_replacement(iterable, r):
+ "combinations_with_replacement('ABC', 3) --> AA AB AC BB BC CC"
+ pool = tuple(iterable)
+ n = len(pool)
+ indices = [0] * r
+ yield tuple(pool[i] for i in indices)
+ while True:
+ for i in reversed(range(r)):
+ if indices[i] != n - 1:
+ break
+ else:
+ return
+ indices[i:] = [indices[i] + 1] * (r - i)
+ yield tuple(pool[i] for i in indices)
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index 3f6b860..734e3b2 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -1647,7 +1647,7 @@ timed intervals.
The system will save old log files by appending extensions to the filename.
The extensions are date-and-time based, using the strftime format
``%Y-%m-%d_%H-%M-%S`` or a leading portion thereof, depending on the
- rollover interval.
+ rollover interval.
If the *utc* argument is true, times in UTC will be used; otherwise
local time is used.
@@ -2315,6 +2315,10 @@ The ``class`` entry indicates the handler's class (as determined by :func:`eval`
in the ``logging`` package's namespace). The ``level`` is interpreted as for
loggers, and ``NOTSET`` is taken to mean "log everything".
+.. versionchanged:: 2.6
+ Added support for resolving the handler's class as a dotted module and class
+ name.
+
The ``formatter`` entry indicates the key name of the formatter for this
handler. If blank, a default formatter (``logging._defaultFormatter``) is used.
If a name is specified, it must appear in the ``[formatters]`` section and have
diff --git a/Doc/library/re.rst b/Doc/library/re.rst
index 5831364..a6ebc22 100644
--- a/Doc/library/re.rst
+++ b/Doc/library/re.rst
@@ -571,17 +571,20 @@ form.
.. function:: findall(pattern, string[, flags])
Return all non-overlapping matches of *pattern* in *string*, as a list of
- strings. If one or more groups are present in the pattern, return a list of
- groups; this will be a list of tuples if the pattern has more than one group.
- Empty matches are included in the result unless they touch the beginning of
- another match.
+ strings. The *string* is scanned left-to-right, and matches are returned in
+ the order found. If one or more groups are present in the pattern, return a
+ list of groups; this will be a list of tuples if the pattern has more than
+ one group. Empty matches are included in the result unless they touch the
+ beginning of another match.
.. function:: finditer(pattern, string[, flags])
Return an :term:`iterator` yielding :class:`MatchObject` instances over all
- non-overlapping matches for the RE *pattern* in *string*. Empty matches are
- included in the result unless they touch the beginning of another match.
+ non-overlapping matches for the RE *pattern* in *string*. The *string* is
+ scanned left-to-right, and matches are returned in the order found. Empty
+ matches are included in the result unless they touch the beginning of another
+ match.
.. function:: sub(pattern, repl, string[, count])
diff --git a/Doc/library/string.rst b/Doc/library/string.rst
index faf5fed..5049dc1 100644
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -360,10 +360,11 @@ zero-padding. This is equivalent to an *alignment* type of ``'='`` and a *fill*
character of ``'0'``.
The *precision* is a decimal number indicating how many digits should be
-displayed after the decimal point for a floating point value. For non-number
-types the field indicates the maximum field size - in other words, how many
-characters will be used from the field content. The *precision* is ignored for
-integer values.
+displayed after the decimal point for a floating point value formatted with
+``'f'`` and ``'F'``, or before and after the decimal point for a floating point
+value formatted with ``'g'`` or ``'G'``. For non-number types the field
+indicates the maximum field size - in other words, how many characters will be
+used from the field content. The *precision* is ignored for integer values.
Finally, the *type* determines how the data should be presented.
@@ -391,7 +392,7 @@ The available integer presentation types are:
| | the current locale setting to insert the appropriate |
| | number separator characters. |
+---------+----------------------------------------------------------+
- | None | the same as ``'d'`` |
+ | None | The same as ``'d'``. |
+---------+----------------------------------------------------------+
The available presentation types for floating point and decimal values are:
@@ -412,10 +413,13 @@ The available presentation types for floating point and decimal values are:
+---------+----------------------------------------------------------+
| ``'g'`` | General format. This prints the number as a fixed-point |
| | number, unless the number is too large, in which case |
- | | it switches to ``'e'`` exponent notation. |
+ | | it switches to ``'e'`` exponent notation. Infinity and |
+ | | NaN values are formatted as ``inf``, ``-inf`` and |
+ | | ``nan``, respectively. |
+---------+----------------------------------------------------------+
| ``'G'`` | General format. Same as ``'g'`` except switches to |
- | | ``'E'`` if the number gets to large. |
+ | | ``'E'`` if the number gets to large. The representations |
+ | | of infinity and NaN are uppercased, too. |
+---------+----------------------------------------------------------+
| ``'n'`` | Number. This is the same as ``'g'``, except that it uses |
| | the current locale setting to insert the appropriate |
@@ -424,7 +428,7 @@ The available presentation types for floating point and decimal values are:
| ``'%'`` | Percentage. Multiplies the number by 100 and displays |
| | in fixed (``'f'``) format, followed by a percent sign. |
+---------+----------------------------------------------------------+
- | None | the same as ``'g'`` |
+ | None | The same as ``'g'``. |
+---------+----------------------------------------------------------+
diff --git a/Doc/reference/compound_stmts.rst b/Doc/reference/compound_stmts.rst
index a3665e7..9dd2c99 100644
--- a/Doc/reference/compound_stmts.rst
+++ b/Doc/reference/compound_stmts.rst
@@ -433,7 +433,7 @@ reference to the current global namespace as the global namespace to be used
when the function is called.
The function definition does not execute the function body; this gets executed
-only when the function is called.
+only when the function is called. [#]_
.. index::
statement: @
@@ -535,6 +535,7 @@ Class definitions
pair: name; binding
pair: execution; frame
single: inheritance
+ single: docstring
A class definition defines a class object (see section :ref:`types`):
@@ -552,10 +553,10 @@ to a class object or class type which allows subclassing. The class's suite is
then executed in a new execution frame (see section :ref:`naming`), using a
newly created local namespace and the original global namespace. (Usually, the
suite contains only function definitions.) When the class's suite finishes
-execution, its execution frame is discarded but its local namespace is saved. A
-class object is then created using the inheritance list for the base classes and
-the saved local namespace for the attribute dictionary. The class name is bound
-to this class object in the original local namespace.
+execution, its execution frame is discarded but its local namespace is
+saved. [#]_ A class object is then created using the inheritance list for the
+base classes and the saved local namespace for the attribute dictionary. The
+class name is bound to this class object in the original local namespace.
Classes can also be decorated; as with functions, ::
@@ -597,3 +598,11 @@ which is then bound to the class name.
.. [#] Currently, control "flows off the end" except in the case of an exception or the
execution of a :keyword:`return`, :keyword:`continue`, or :keyword:`break`
statement.
+
+.. [#] A string literal appearing as the first statement in the function body is
+ transformed into the function's ``__doc__`` attribute and therefore the
+ function's :term:`docstring`.
+
+.. [#] A string literal appearing as the first statement in the class body is
+ transformed into the namespace's ``__doc__`` item and therefore the class's
+ :term:`docstring`.
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index 3d531c7..8f95700 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -1435,6 +1435,10 @@ saved because *__dict__* is not created for each instance.
Notes on using *__slots__*
""""""""""""""""""""""""""
+* When inheriting from a class without *__slots__*, the *__dict__* attribute of
+ that class will always be accessible, so a *__slots__* definition in the
+ subclass is meaningless.
+
* Without a *__dict__* variable, instances cannot be assigned new variables not
listed in the *__slots__* definition. Attempts to assign to an unlisted
variable name raises :exc:`AttributeError`. If dynamic assignment of new
diff --git a/Doc/tutorial/inputoutput.rst b/Doc/tutorial/inputoutput.rst
index cc2a392..cbca95b 100644
--- a/Doc/tutorial/inputoutput.rst
+++ b/Doc/tutorial/inputoutput.rst
@@ -355,6 +355,16 @@ attempts to use the file object will automatically fail. ::
File "<stdin>", line 1, in ?
ValueError: I/O operation on closed file
+It is good practice to use the :keyword:`with` keyword when dealing with file
+objects. This has the advantage that the file is properly closed after its
+suite finishes, even if an exception is raised on the way. It is also much
+shorter than writing equivalent :keyword:`try`\ -\ :keyword:`finally` blocks::
+
+ >>> with open('/tmp/workfile', 'r') as f:
+ ... read_data = f.read()
+ >>> f.closed
+ True
+
File objects have some additional methods, such as :meth:`isatty` and
:meth:`truncate` which are less frequently used; consult the Library Reference
for a complete guide to file objects.
diff --git a/Doc/whatsnew/2.6.rst b/Doc/whatsnew/2.6.rst
index 5cf29cb..203091f 100644
--- a/Doc/whatsnew/2.6.rst
+++ b/Doc/whatsnew/2.6.rst
@@ -1324,14 +1324,6 @@ The most general ABC is :class:`Number`. It defines no operations at
all, and only exists to allow checking if an object is a number by
doing ``isinstance(obj, Number)``.
-Numbers are further divided into :class:`Exact` and :class:`Inexact`.
-Exact numbers can represent values precisely and operations never
-round off the results or introduce tiny errors that may break the
-commutativity and associativity properties; inexact numbers may
-perform such rounding or introduce small errors. Integers, long
-integers, and rational numbers are exact, while floating-point
-and complex numbers are inexact.
-
:class:`Complex` is a subclass of :class:`Number`. Complex numbers
can undergo the basic operations of addition, subtraction,
multiplication, division, and exponentiation, and you can retrieve the
@@ -1449,13 +1441,15 @@ Here are all of the changes that Python 2.6 makes to the core Python language.
it will be returned if *iterator* has been exhausted; otherwise,
the :exc:`StopIteration` exception will be raised. (:issue:`2719`)
-* Tuples now have an :meth:`index` method matching the list type's
- :meth:`index` method::
+* Tuples now have :meth:`index` and :meth:`count` methods matching the
+ list type's :meth:`index` and :meth:`count` methods::
>>> t = (0,1,2,3,4)
>>> t.index(3)
3
+ (Contributed by Raymond Hettinger)
+
* The built-in types now have improved support for extended slicing syntax,
where various combinations of ``(start, stop, step)`` are supplied.
Previously, the support was partial and certain corner cases wouldn't work.
@@ -1545,7 +1539,8 @@ Here are all of the changes that Python 2.6 makes to the core Python language.
* :func:`~math.sum` adds up the stream of numbers from an iterable,
and is careful to avoid loss of precision by calculating partial sums.
- (Contributed by Jean Brouwers; :issue:`2819`.)
+ (Contributed by Jean Brouwers, Raymond Hettinger, and Mark Dickinson;
+ :issue:`2819`.)
* The inverse hyperbolic functions :func:`~math.acosh`, :func:`~math.asinh`
and :func:`~math.atanh`.
@@ -1596,8 +1591,8 @@ Here are all of the changes that Python 2.6 makes to the core Python language.
* The string :meth:`translate` method now accepts ``None`` as the
translation table parameter, which is treated as the identity
transformation. This makes it easier to carry out operations
- that only delete characters. (Contributed by Bengt Richter;
- :issue:`1193128`.)
+ that only delete characters. (Contributed by Bengt Richter and
+ implemented by Raymond Hettinger; :issue:`1193128`.)
* The built-in :func:`dir` function now checks for a :meth:`__dir__`
method on the objects it receives. This method must return a list