Mailman 3 March 2011 - Python-checkins

cpython (3.2): Add links to make the math docs more usable.
by raymond.hettinger 31 Mar '11

31 Mar '11

http://hg.python.org/cpython/rev/69c91ee0b7dd changeset: 69088:69c91ee0b7dd branch: 3.2 parent: 69077:a00b9a5688da user: Raymond Hettinger <python(a)rcn.com> date: Thu Mar 31 12:04:53 2011 -0700 summary: Add links to make the math docs more usable. files: Doc/library/math.rst | 30 +++++++++++++++++++++++------- 1 files changed, 23 insertions(+), 7 deletions(-) diff --git a/Doc/library/math.rst b/Doc/library/math.rst --- a/Doc/library/math.rst +++ b/Doc/library/math.rst @@ -156,10 +156,10 @@ .. function:: expm1(x) - Return ``e**x - 1``. For small floats *x*, the subtraction in - ``exp(x) - 1`` can result in a significant loss of precision; the - :func:`expm1` function provides a way to compute this quantity to - full precision:: + Return ``e**x - 1``. For small floats *x*, the subtraction in ``exp(x) - 1`` + can result in a `significant loss of precision + <http://en.wikipedia.org/wiki/Loss_of_significance>`_\; the :func:`expm1` + function provides a way to compute this quantity to full precision:: >>> from math import exp, expm1 >>> exp(1e-5) - 1 # gives result accurate to 11 places @@ -269,6 +269,9 @@ Hyperbolic functions -------------------- +`Hyperbolic functions <http://en.wikipedia.org/wiki/Hyperbolic_function>`_ +are analogs of trigonometric functions that are based on hyperbolas +instead of circles. .. function:: acosh(x) @@ -305,21 +308,34 @@ .. function:: erf(x) - Return the error function at *x*. + Return the `error function <http://en.wikipedia.org/wiki/Error_function>`_ at + *x*. + + The :func:`erf` function can be used to compute traditional statistical + functions such as the `cumulative standard normal distribution + <http://en.wikipedia.org/wiki/Normal_distribution#Cumulative_distribution_fu…>`_:: + + def phi(x): + 'Cumulative distribution function for the standard normal distribution' + return (1.0 + erf(x / sqrt(2.0))) / 2.0 .. versionadded:: 3.2 .. function:: erfc(x) - Return the complementary error function at *x*. + Return the complementary error function at *x*. The `complementary error + function <http://en.wikipedia.org/wiki/Error_function>`_ is defined as + ``1.0 - erf(x)``. It is used for large values of *x* where a straight + substraction from *1* would cause a `loss of significance + <http://en.wikipedia.org/wiki/Loss_of_significance>`_\. .. versionadded:: 3.2 .. function:: gamma(x) - Return the Gamma function at *x*. + Return the `Gamma function<http://en.wikipedia.org/wiki/Gamma_function>` at *x*. .. versionadded:: 3.2 -- Repository URL: http://hg.python.org/cpython

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cpython (merge 3.2 -> default): Issue #7796: Add link to Jan Kaliszewski's alternate constructor and ABC for
by raymond.hettinger 31 Mar '11

31 Mar '11

http://hg.python.org/cpython/rev/330d3482cad8 changeset: 69094:330d3482cad8 parent: 69092:3e191db416a6 parent: 69093:7aa3f1f7ac94 user: Raymond Hettinger <python(a)rcn.com> date: Thu Mar 31 15:46:39 2011 -0700 summary: Issue #7796: Add link to Jan Kaliszewski's alternate constructor and ABC for named tuples. files: Doc/library/collections.rst | 11 +++++++++-- Misc/ACKS | 1 + 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst --- a/Doc/library/collections.rst +++ b/Doc/library/collections.rst @@ -857,8 +857,15 @@ .. seealso:: - `Named tuple recipe <http://code.activestate.com/recipes/500261/>`_ - adapted for Python 2.4. + * `Named tuple recipe <http://code.activestate.com/recipes/500261/>`_ + adapted for Python 2.4. + + * `Recipe for named tuple abstract base class with a metaclass mix-in + <http://code.activestate.com/recipes/577629-namedtupleabc-abstract-base-clas…>`_ + by Jan Kaliszewski. Besides providing an :term:`abstract base class` for + named tuples, it also supports an alternate :term:`metaclass`-based + constructor that is convenient for use cases where named tuples are being + subclassed. :class:`OrderedDict` objects diff --git a/Misc/ACKS b/Misc/ACKS --- a/Misc/ACKS +++ b/Misc/ACKS @@ -452,6 +452,7 @@ Peter van Kampen Rafe Kaplan Jacob Kaplan-Moss +Jan Kaliszewski Arkady Koplyarov Lou Kates Hiroaki Kawai -- Repository URL: http://hg.python.org/cpython

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cpython (3.2): Issue #7796: Add link to Jan Kaliszewski's alternate constructor and ABC for
by raymond.hettinger 31 Mar '11

31 Mar '11

http://hg.python.org/cpython/rev/7aa3f1f7ac94 changeset: 69093:7aa3f1f7ac94 branch: 3.2 parent: 69091:9797bfe8240f user: Raymond Hettinger <python(a)rcn.com> date: Thu Mar 31 15:46:06 2011 -0700 summary: Issue #7796: Add link to Jan Kaliszewski's alternate constructor and ABC for named tuples. files: Doc/library/collections.rst | 11 +++++++++-- Misc/ACKS | 1 + 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst --- a/Doc/library/collections.rst +++ b/Doc/library/collections.rst @@ -775,8 +775,15 @@ .. seealso:: - `Named tuple recipe <http://code.activestate.com/recipes/500261/>`_ - adapted for Python 2.4. + * `Named tuple recipe <http://code.activestate.com/recipes/500261/>`_ + adapted for Python 2.4. + + * `Recipe for named tuple abstract base class with a metaclass mix-in + <http://code.activestate.com/recipes/577629-namedtupleabc-abstract-base-clas…>`_ + by Jan Kaliszewski. Besides providing an :term:`abstract base class` for + named tuples, it also supports an alternate :term:`metaclass`-based + constructor that is convenient for use cases where named tuples are being + subclassed. :class:`OrderedDict` objects diff --git a/Misc/ACKS b/Misc/ACKS --- a/Misc/ACKS +++ b/Misc/ACKS @@ -449,6 +449,7 @@ Peter van Kampen Rafe Kaplan Jacob Kaplan-Moss +Jan Kaliszewski Arkady Koplyarov Lou Kates Hiroaki Kawai -- Repository URL: http://hg.python.org/cpython

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cpython (merge 3.2 -> default): Fix markup and wording.
by raymond.hettinger 31 Mar '11

31 Mar '11

http://hg.python.org/cpython/rev/3e191db416a6 changeset: 69092:3e191db416a6 parent: 69090:69f58be4688a parent: 69091:9797bfe8240f user: Raymond Hettinger <python(a)rcn.com> date: Thu Mar 31 13:59:52 2011 -0700 summary: Fix markup and wording. files: Doc/library/math.rst | 7 ++++--- 1 files changed, 4 insertions(+), 3 deletions(-) diff --git a/Doc/library/math.rst b/Doc/library/math.rst --- a/Doc/library/math.rst +++ b/Doc/library/math.rst @@ -326,8 +326,8 @@ Return the complementary error function at *x*. The `complementary error function <http://en.wikipedia.org/wiki/Error_function>`_ is defined as - ``1.0 - erf(x)``. It is used for large values of *x* where a straight - substraction from *1* would cause a `loss of significance + ``1.0 - erf(x)``. It is used for large values of *x* where a subtraction + from one would cause a `loss of significance <http://en.wikipedia.org/wiki/Loss_of_significance>`_\. .. versionadded:: 3.2 @@ -335,7 +335,8 @@ .. function:: gamma(x) - Return the `Gamma function<http://en.wikipedia.org/wiki/Gamma_function>` at *x*. + Return the `Gamma function <http://en.wikipedia.org/wiki/Gamma_function>`_ at + *x*. .. versionadded:: 3.2 -- Repository URL: http://hg.python.org/cpython

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cpython (3.2): Fix markup and wording.
by raymond.hettinger 31 Mar '11

31 Mar '11

http://hg.python.org/cpython/rev/9797bfe8240f changeset: 69091:9797bfe8240f branch: 3.2 parent: 69088:69c91ee0b7dd user: Raymond Hettinger <python(a)rcn.com> date: Thu Mar 31 13:59:24 2011 -0700 summary: Fix markup and wording. files: Doc/library/math.rst | 7 ++++--- 1 files changed, 4 insertions(+), 3 deletions(-) diff --git a/Doc/library/math.rst b/Doc/library/math.rst --- a/Doc/library/math.rst +++ b/Doc/library/math.rst @@ -326,8 +326,8 @@ Return the complementary error function at *x*. The `complementary error function <http://en.wikipedia.org/wiki/Error_function>`_ is defined as - ``1.0 - erf(x)``. It is used for large values of *x* where a straight - substraction from *1* would cause a `loss of significance + ``1.0 - erf(x)``. It is used for large values of *x* where a subtraction + from one would cause a `loss of significance <http://en.wikipedia.org/wiki/Loss_of_significance>`_\. .. versionadded:: 3.2 @@ -335,7 +335,8 @@ .. function:: gamma(x) - Return the `Gamma function<http://en.wikipedia.org/wiki/Gamma_function>` at *x*. + Return the `Gamma function <http://en.wikipedia.org/wiki/Gamma_function>`_ at + *x*. .. versionadded:: 3.2 -- Repository URL: http://hg.python.org/cpython

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cpython: Issue #11393: test_faulthandler is more tolerant on inaccurate time
by victor.stinner 31 Mar '11

31 Mar '11

http://hg.python.org/cpython/rev/69f58be4688a changeset: 69090:69f58be4688a user: Victor Stinner <victor.stinner(a)haypocalc.com> date: Thu Mar 31 22:35:49 2011 +0200 summary: Issue #11393: test_faulthandler is more tolerant on inaccurate time files: Lib/test/test_faulthandler.py | 17 ++++++++++------- 1 files changed, 10 insertions(+), 7 deletions(-) diff --git a/Lib/test/test_faulthandler.py b/Lib/test/test_faulthandler.py --- a/Lib/test/test_faulthandler.py +++ b/Lib/test/test_faulthandler.py @@ -22,8 +22,8 @@ def expected_traceback(lineno1, lineno2, header, count=1): regex = header - regex += r' File "\<string\>", line %s in func\n' % lineno1 - regex += r' File "\<string\>", line %s in \<module\>' % lineno2 + regex += ' File "<string>", line %s in func\n' % lineno1 + regex += ' File "<string>", line %s in <module>' % lineno2 if count != 1: regex = (regex + '\n') * (count - 1) + regex return '^' + regex + '$' @@ -349,20 +349,23 @@ def func(repeat, cancel, timeout): pause = timeout * 2.5 + # on Windows XP, b-a gives 1.249931 after sleep(1.25) + min_pause = pause * 0.9 a = time.time() time.sleep(pause) faulthandler.cancel_dump_tracebacks_later() b = time.time() # Check that sleep() was not interrupted - assert (b - a) >= pause, "{{}} < {{}}".format(b - a, pause) + assert (b - a) >= min_pause, "{{}} < {{}}".format(b - a, min_pause) if cancel: pause = timeout * 1.5 + min_pause = pause * 0.9 a = time.time() time.sleep(pause) b = time.time() # Check that sleep() was not interrupted - assert (b - a) >= pause, "{{}} < {{}}".format(b - a, pause) + assert (b - a) >= min_pause, "{{}} < {{}}".format(b - a, min_pause) timeout = 0.5 repeat = {repeat} @@ -391,8 +394,8 @@ else: count = 1 header = 'Thread 0x[0-9a-f]+:\n' - regex = expected_traceback(7, 30, header, count=count) - self.assertRegex(trace, '^%s$' % regex) + regex = expected_traceback(9, 33, header, count=count) + self.assertRegex(trace, regex) self.assertEqual(exitcode, 0) @unittest.skipIf(not hasattr(faulthandler, 'dump_tracebacks_later'), @@ -456,7 +459,7 @@ else: regex = 'Traceback $most recent call first$:\n' regex = expected_traceback(6, 14, regex) - self.assertRegex(trace, '^%s$' % regex) + self.assertRegex(trace, regex) self.assertEqual(exitcode, 0) def test_register(self): -- Repository URL: http://hg.python.org/cpython

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cpython (merge 3.2 -> default): Add links to make the math docs more usable.
by raymond.hettinger 31 Mar '11

31 Mar '11

http://hg.python.org/cpython/rev/992ca4fdaf17 changeset: 69089:992ca4fdaf17 parent: 69087:d9a1a2eb3069 parent: 69088:69c91ee0b7dd user: Raymond Hettinger <python(a)rcn.com> date: Thu Mar 31 12:06:47 2011 -0700 summary: Add links to make the math docs more usable. files: Doc/library/math.rst | 30 +++++++++++++++++++++++------- 1 files changed, 23 insertions(+), 7 deletions(-) diff --git a/Doc/library/math.rst b/Doc/library/math.rst --- a/Doc/library/math.rst +++ b/Doc/library/math.rst @@ -156,10 +156,10 @@ .. function:: expm1(x) - Return ``e**x - 1``. For small floats *x*, the subtraction in - ``exp(x) - 1`` can result in a significant loss of precision; the - :func:`expm1` function provides a way to compute this quantity to - full precision:: + Return ``e**x - 1``. For small floats *x*, the subtraction in ``exp(x) - 1`` + can result in a `significant loss of precision + <http://en.wikipedia.org/wiki/Loss_of_significance>`_\; the :func:`expm1` + function provides a way to compute this quantity to full precision:: >>> from math import exp, expm1 >>> exp(1e-5) - 1 # gives result accurate to 11 places @@ -269,6 +269,9 @@ Hyperbolic functions -------------------- +`Hyperbolic functions <http://en.wikipedia.org/wiki/Hyperbolic_function>`_ +are analogs of trigonometric functions that are based on hyperbolas +instead of circles. .. function:: acosh(x) @@ -305,21 +308,34 @@ .. function:: erf(x) - Return the error function at *x*. + Return the `error function <http://en.wikipedia.org/wiki/Error_function>`_ at + *x*. + + The :func:`erf` function can be used to compute traditional statistical + functions such as the `cumulative standard normal distribution + <http://en.wikipedia.org/wiki/Normal_distribution#Cumulative_distribution_fu…>`_:: + + def phi(x): + 'Cumulative distribution function for the standard normal distribution' + return (1.0 + erf(x / sqrt(2.0))) / 2.0 .. versionadded:: 3.2 .. function:: erfc(x) - Return the complementary error function at *x*. + Return the complementary error function at *x*. The `complementary error + function <http://en.wikipedia.org/wiki/Error_function>`_ is defined as + ``1.0 - erf(x)``. It is used for large values of *x* where a straight + substraction from *1* would cause a `loss of significance + <http://en.wikipedia.org/wiki/Loss_of_significance>`_\. .. versionadded:: 3.2 .. function:: gamma(x) - Return the Gamma function at *x*. + Return the `Gamma function<http://en.wikipedia.org/wiki/Gamma_function>` at *x*. .. versionadded:: 3.2 -- Repository URL: http://hg.python.org/cpython

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cpython: Issue #11393: get more information on assertion error (test_faulthandler)
by victor.stinner 31 Mar '11

31 Mar '11

http://hg.python.org/cpython/rev/61626c3f3a54 changeset: 69086:61626c3f3a54 user: Victor Stinner <victor.stinner(a)haypocalc.com> date: Thu Mar 31 19:07:58 2011 +0200 summary: Issue #11393: get more information on assertion error (test_faulthandler) files: Lib/test/test_faulthandler.py | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/Lib/test/test_faulthandler.py b/Lib/test/test_faulthandler.py --- a/Lib/test/test_faulthandler.py +++ b/Lib/test/test_faulthandler.py @@ -354,7 +354,7 @@ faulthandler.cancel_dump_tracebacks_later() b = time.time() # Check that sleep() was not interrupted - assert (b -a) >= pause + assert (b - a) >= pause, "{{}} < {{}}".format(b - a, pause) if cancel: pause = timeout * 1.5 @@ -362,7 +362,7 @@ time.sleep(pause) b = time.time() # Check that sleep() was not interrupted - assert (b -a) >= pause + assert (b - a) >= pause, "{{}} < {{}}".format(b - a, pause) timeout = 0.5 repeat = {repeat} -- Repository URL: http://hg.python.org/cpython

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cpython: Move assertBytesEqual to base test class, improve it, and hook into assertEqual
by r.david.murray 31 Mar '11

31 Mar '11

http://hg.python.org/cpython/rev/d9a1a2eb3069 changeset: 69087:d9a1a2eb3069 user: R David Murray <rdmurray(a)bitdance.com> date: Thu Mar 31 13:11:40 2011 -0400 summary: Move assertBytesEqual to base test class, improve it, and hook into assertEqual files: Lib/test/test_email/__init__.py | 11 +++++++++++ Lib/test/test_email/test_email.py | 7 +------ 2 files changed, 12 insertions(+), 6 deletions(-) diff --git a/Lib/test/test_email/__init__.py b/Lib/test/test_email/__init__.py --- a/Lib/test/test_email/__init__.py +++ b/Lib/test/test_email/__init__.py @@ -25,6 +25,10 @@ # Base test class class TestEmailBase(unittest.TestCase): + def __init__(self, *args, **kw): + super().__init__(*args, **kw) + self.addTypeEqualityFunc(bytes, self.assertBytesEqual) + def ndiffAssertEqual(self, first, second): """Like assertEqual except use ndiff for readable output.""" if first != second: @@ -38,3 +42,10 @@ def _msgobj(self, filename): with openfile(filename) as fp: return email.message_from_file(fp) + + def _bytes_repr(self, b): + return [repr(x) for x in b.splitlines(True)] + + def assertBytesEqual(self, first, second, msg): + """Our byte strings are really encoded strings; improve diff output""" + self.assertEqual(self._bytes_repr(first), self._bytes_repr(second)) diff --git a/Lib/test/test_email/test_email.py b/Lib/test/test_email/test_email.py --- a/Lib/test/test_email/test_email.py +++ b/Lib/test/test_email/test_email.py @@ -3161,12 +3161,7 @@ b = BytesIO() g = email.generator.BytesGenerator(b, maxheaderlen=0) g.flatten(msg, unixfrom=unixfrom, linesep=self.linesep) - self.assertByteStringsEqual(data, b.getvalue()) - - def assertByteStringsEqual(self, str1, str2): - # Not using self.blinesep here is intentional. This way the output - # is more useful when the failure results in mixed line endings. - self.assertListEqual(str1.split(b'\n'), str2.split(b'\n')) + self.assertEqual(data, b.getvalue()) class TestBytesGeneratorIdempotentNL(BaseTestBytesGeneratorIdempotent, -- Repository URL: http://hg.python.org/cpython

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r88810 - in tracker/instances/python-dev/html: issue.item.html issue.item.js
by martin.v.loewis 31 Mar '11

31 Mar '11

Author: martin.v.loewis Date: Thu Mar 31 18:45:03 2011 New Revision: 88810 Log: Revert form folding. Modified: tracker/instances/python-dev/html/issue.item.html tracker/instances/python-dev/html/issue.item.js Modified: tracker/instances/python-dev/html/issue.item.html ============================================================================== --- tracker/instances/python-dev/html/issue.item.html (original) +++ tracker/instances/python-dev/html/issue.item.html Thu Mar 31 18:45:03 2011 @@ -27,7 +27,7 @@ replace="context/id" i18n:name="id" /> Editing</span> </tal:block> -<div class="content" metal:fill-slot="content"> +<td class="content" metal:fill-slot="content"> <p tal:condition="python:not (context.is_view_ok() or request.user.hasRole('Anonymous'))" i18n:translate=""> @@ -38,22 +38,12 @@ Please login with your username and password.</p> <div tal:condition="context/is_view_ok"> - <p style="display:none" id="condensed" tal:condition="context/id"> - This is an <b tal:content="context/status"/> - <b tal:content="context/type"/> issue<tal:block - tal:condition="context/stage"> in stage - <b tal:content="context/stage"/></tal:block><tal:block - tal:condition="context/components"> applying to - <b tal:content="context/components"/></tal:block><tal:block tal:condition="context/versions"> in - <b tal:content="context/versions"/></tal:block>. - <a href="javascript:unfold()">Unfold edit form</a> - </p> <form method="POST" name="itemSynopsis" onSubmit="return submit_once()" enctype="multipart/form-data" tal:attributes="action context/designator"> -<fieldset id="classification"><legend>classification</legend> +<fieldset><legend>classification</legend> <table class="form"> <tr> <th class="required" i18n:translate=""> @@ -95,7 +85,7 @@ </fieldset> <fieldset><legend>process</legend> -<table class="form" id="processfields"> +<table class="form"> <tr tal:condition="context/id"> <th i18n:translate=""> <a href="http://docs.python.org/devguide/triaging.html#status" @@ -185,8 +175,6 @@ </tr> -</table> -<table class="form"> <tr tal:condition="context/is_edit_ok"> <th> <a href="http://docs.python.org/devguide/triaging.html#generating-special-links-in-a…" @@ -197,6 +185,7 @@ name="@note" rows="10" cols="72"></textarea> </td> </tr> + <tr tal:condition="context/is_edit_ok"> <th><tal:block i18n:translate="">File</tal:block>:</th> <td colspan="3"> @@ -358,6 +347,6 @@ </div> -</div> +</td> </tal:block> Modified: tracker/instances/python-dev/html/issue.item.js ============================================================================== --- tracker/instances/python-dev/html/issue.item.js (original) +++ tracker/instances/python-dev/html/issue.item.js Thu Mar 31 18:45:03 2011 @@ -1,11 +1,4 @@ window.onload = function () { - var condensed = document.getElementById("condensed"); - if(condensed) { - condensed.style.display = "block"; - document.getElementById("classification").style.display="none"; - document.getElementById("processfields").style.display="none"; - } - // create the input button and use it to replace the span/placeholder -- // users without javascript won't notice anything. // This might eventually be replaced by jquery @@ -48,10 +41,3 @@ nosy.style.display = 'inline'; nosy.style.width = new_width + "px"; } - -function unfold() { - document.getElementById("condensed").style.display = "none"; - document.getElementById("classification").style.display = "block"; - document.getElementById("processfields").style.display = "block"; - -}

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