Mailman 3 December 2015 - Python-checkins

Benchmark Results for Python 2.7 2015-12-30
by lp_benchmark_robot＠intel.com 30 Dec '15

30 Dec '15

No new revisions. Here are the previous results: Results for project Python 2.7, build date 2015-12-30 03:57:04 +0000 commit: 11670e4be1a92d0a36ea6d8d2039a500f2f577ec previous commit: deda5b5160d264b4ed74d03bf57396410df3b780 revision date: 2015-12-27 13:41:58 +0000 environment: Haswell-EP cpu: Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz 2x18 cores, stepping 2, LLC 45 MB mem: 128 GB os: CentOS 7.1 kernel: Linux 3.10.0-229.4.2.el7.x86_64 Baseline results were generated using release v2.7.10, with hash 15c95b7d81dcf821daade360741e00714667653f from 2015-05-23 16:02:14+00:00 ---------------------------------------------------------------------------------- benchmark relative change since change since current rev run std_dev* last run baseline with PGO ---------------------------------------------------------------------------------- :-) django_v2 0.38% -0.37% 3.92% 3.85% :-) pybench 0.14% 0.26% 6.28% 4.59% :-( regex_v8 1.14% -0.30% -2.46% 10.65% :-) nbody 0.12% -0.32% 8.28% 1.00% :-) json_dump_v2 0.25% 1.02% 5.56% 8.42% :-( normal_startup 2.00% -0.31% -6.05% 3.20% :-| ssbench 0.16% 0.18% 1.14% 1.66% ---------------------------------------------------------------------------------- * Relative Standard Deviation (Standard Deviation/Average) Note: Benchmark results for ssbench are measured in requests/second while all other are measured in seconds. Our lab does a nightly source pull and build of the Python project and measures performance changes against the previous stable version and the previous nightly measurement. This is provided as a service to the community so that quality issues with current hardware can be identified quickly. Intel technologies' features and benefits depend on system configuration and may require enabled hardware, software or service activation. Performance varies depending on system configuration.

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Benchmark Results for Python Default 2015-12-30
by lp_benchmark_robot＠intel.com 30 Dec '15

30 Dec '15

Results for project Python default, build date 2015-12-30 03:06:04 +0000 commit: 5b43d7984a63a5b3eb6139187bc7da3a3dc1b011 previous commit: ab0e60a3636881dc9ffaba761c44e941cfd96477 revision date: 2015-12-29 23:42:43 +0000 environment: Haswell-EP cpu: Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz 2x18 cores, stepping 2, LLC 45 MB mem: 128 GB os: CentOS 7.1 kernel: Linux 3.10.0-229.4.2.el7.x86_64 Baseline results were generated using release v3.4.3, with hash b4cbecbc0781e89a309d03b60a1f75f8499250e6 from 2015-02-25 12:15:33+00:00 ---------------------------------------------------------------------------------- benchmark relative change since change since current rev run std_dev* last run baseline with PGO ---------------------------------------------------------------------------------- :-) django_v2 0.27% 0.37% 11.16% 15.17% :-| pybench 0.06% 0.38% -1.42% 5.24% :-( regex_v8 2.65% -0.15% -5.15% 5.60% :-| nbody 0.07% 0.17% -0.15% 9.00% :-| json_dump_v2 0.13% 0.41% -1.56% 11.65% :-( normal_startup 0.96% -0.46% -2.09% 5.26% ---------------------------------------------------------------------------------- * Relative Standard Deviation (Standard Deviation/Average) Note: Benchmark results are measured in seconds. Our lab does a nightly source pull and build of the Python project and measures performance changes against the previous stable version and the previous nightly measurement. This is provided as a service to the community so that quality issues with current hardware can be identified quickly. Intel technologies' features and benefits depend on system configuration and may require enabled hardware, software or service activation. Performance varies depending on system configuration.

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Daily reference leaks (5b43d7984a63): sum=4
by solipsis＠pitrou.net 30 Dec '15

30 Dec '15

results for 5b43d7984a63 on branch "default" -------------------------------------------- test_functools leaked [0, 2, 2] memory blocks, sum=4 Command line was: ['./python', '-m', 'test.regrtest', '-uall', '-R', '3:3:/home/psf-users/antoine/refleaks/refloge6mSqW', '--timeout', '7200']

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cpython (merge 3.5 -> default): Fixed formatting comman-line usage message.
by serhiy.storchaka 30 Dec '15

30 Dec '15

https://hg.python.org/cpython/rev/0155eefa8162 changeset: 99721:0155eefa8162 parent: 99719:5b43d7984a63 parent: 99720:4679b841e5ef user: Serhiy Storchaka <storchaka(a)gmail.com> date: Wed Dec 30 09:28:48 2015 +0200 summary: Fixed formatting comman-line usage message. files: Modules/main.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/Modules/main.c b/Modules/main.c --- a/Modules/main.c +++ b/Modules/main.c @@ -85,11 +85,11 @@ arg ...: arguments passed to program in sys.argv[1:]\n\n\ Other environment variables:\n\ PYTHONSTARTUP: file executed on interactive startup (no default)\n\ -PYTHONPATH : '%c'-separated list of directories prefixed to the\n\ +PYTHONPATH : '%lc'-separated list of directories prefixed to the\n\ default module search path. The result is sys.path.\n\ "; static const char usage_5[] = -"PYTHONHOME : alternate <prefix> directory (or <prefix>%c<exec_prefix>).\n" +"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n" " The default module search path uses %s.\n" "PYTHONCASEOK : ignore case in 'import' statements (Windows).\n" "PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n" @@ -114,8 +114,8 @@ fputs(usage_1, f); fputs(usage_2, f); fputs(usage_3, f); - fprintf(f, usage_4, DELIM); - fprintf(f, usage_5, DELIM, PYTHONHOMEHELP); + fprintf(f, usage_4, (wint_t)DELIM); + fprintf(f, usage_5, (wint_t)DELIM, PYTHONHOMEHELP); fputs(usage_6, f); } return exitcode; -- Repository URL: https://hg.python.org/cpython

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cpython (3.5): Fixed formatting comman-line usage message.
by serhiy.storchaka 30 Dec '15

30 Dec '15

https://hg.python.org/cpython/rev/4679b841e5ef changeset: 99720:4679b841e5ef branch: 3.5 parent: 99718:9057e3857119 user: Serhiy Storchaka <storchaka(a)gmail.com> date: Wed Dec 30 09:28:19 2015 +0200 summary: Fixed formatting comman-line usage message. files: Modules/main.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/Modules/main.c b/Modules/main.c --- a/Modules/main.c +++ b/Modules/main.c @@ -85,11 +85,11 @@ arg ...: arguments passed to program in sys.argv[1:]\n\n\ Other environment variables:\n\ PYTHONSTARTUP: file executed on interactive startup (no default)\n\ -PYTHONPATH : '%c'-separated list of directories prefixed to the\n\ +PYTHONPATH : '%lc'-separated list of directories prefixed to the\n\ default module search path. The result is sys.path.\n\ "; static char *usage_5 = -"PYTHONHOME : alternate <prefix> directory (or <prefix>%c<exec_prefix>).\n" +"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n" " The default module search path uses %s.\n" "PYTHONCASEOK : ignore case in 'import' statements (Windows).\n" "PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n" @@ -114,8 +114,8 @@ fputs(usage_1, f); fputs(usage_2, f); fputs(usage_3, f); - fprintf(f, usage_4, DELIM); - fprintf(f, usage_5, DELIM, PYTHONHOMEHELP); + fprintf(f, usage_4, (wint_t)DELIM); + fprintf(f, usage_5, (wint_t)DELIM, PYTHONHOMEHELP); fputs(usage_6, f); } return exitcode; -- Repository URL: https://hg.python.org/cpython

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cpython (3.5): Issue #25977: Fix typos in Lib/tokenize.py
by berker.peksag 30 Dec '15

30 Dec '15

https://hg.python.org/cpython/rev/9057e3857119 changeset: 99718:9057e3857119 branch: 3.5 parent: 99714:4fa8c0c69ee9 user: Berker Peksag <berker.peksag(a)gmail.com> date: Wed Dec 30 01:41:58 2015 +0200 summary: Issue #25977: Fix typos in Lib/tokenize.py Patch by John Walker. files: Lib/tokenize.py | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/Lib/tokenize.py b/Lib/tokenize.py --- a/Lib/tokenize.py +++ b/Lib/tokenize.py @@ -328,8 +328,8 @@ Round-trip invariant for full input: Untokenized source will match input source exactly - Round-trip invariant for limited intput: - # Output bytes will tokenize the back to the input + Round-trip invariant for limited input: + # Output bytes will tokenize back to the input t1 = [tok[:2] for tok in tokenize(f.readline)] newcode = untokenize(t1) readline = BytesIO(newcode).readline @@ -465,10 +465,10 @@ def tokenize(readline): """ - The tokenize() generator requires one argment, readline, which + The tokenize() generator requires one argument, readline, which must be a callable object which provides the same interface as the readline() method of built-in file objects. Each call to the function - should return one line of input as bytes. Alternately, readline + should return one line of input as bytes. Alternatively, readline can be a callable function terminating with StopIteration: readline = open(myfile, 'rb').__next__ # Example of alternate readline -- Repository URL: https://hg.python.org/cpython

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cpython (merge 3.5 -> default): Issue #25977: Fix typos in Lib/tokenize.py
by berker.peksag 30 Dec '15

30 Dec '15

https://hg.python.org/cpython/rev/5b43d7984a63 changeset: 99719:5b43d7984a63 parent: 99717:3292b4862627 parent: 99718:9057e3857119 user: Berker Peksag <berker.peksag(a)gmail.com> date: Wed Dec 30 01:42:43 2015 +0200 summary: Issue #25977: Fix typos in Lib/tokenize.py Patch by John Walker. files: Lib/tokenize.py | 10 +++++----- 1 files changed, 5 insertions(+), 5 deletions(-) diff --git a/Lib/tokenize.py b/Lib/tokenize.py --- a/Lib/tokenize.py +++ b/Lib/tokenize.py @@ -325,8 +325,8 @@ Round-trip invariant for full input: Untokenized source will match input source exactly - Round-trip invariant for limited intput: - # Output bytes will tokenize the back to the input + Round-trip invariant for limited input: + # Output bytes will tokenize back to the input t1 = [tok[:2] for tok in tokenize(f.readline)] newcode = untokenize(t1) readline = BytesIO(newcode).readline @@ -462,10 +462,10 @@ def tokenize(readline): """ - The tokenize() generator requires one argment, readline, which + The tokenize() generator requires one argument, readline, which must be a callable object which provides the same interface as the readline() method of built-in file objects. Each call to the function - should return one line of input as bytes. Alternately, readline + should return one line of input as bytes. Alternatively, readline can be a callable function terminating with StopIteration: readline = open(myfile, 'rb').__next__ # Example of alternate readline @@ -645,7 +645,7 @@ # we switch to longer prefixes, this needs to be # adjusted. # Note that initial == token[:1]. - # Also note that single quote checking must come afer + # Also note that single quote checking must come after # triple quote checking (above). elif (initial in single_quoted or token[:2] in single_quoted or -- Repository URL: https://hg.python.org/cpython

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cpython: Clean up float.as_integer_ratio().
by serhiy.storchaka 30 Dec '15

30 Dec '15

https://hg.python.org/cpython/rev/3292b4862627 changeset: 99717:3292b4862627 user: Serhiy Storchaka <storchaka(a)gmail.com> date: Tue Dec 29 22:55:48 2015 +0200 summary: Clean up float.as_integer_ratio(). files: Objects/floatobject.c | 36 +++++++++++++----------------- 1 files changed, 16 insertions(+), 20 deletions(-) diff --git a/Objects/floatobject.c b/Objects/floatobject.c --- a/Objects/floatobject.c +++ b/Objects/floatobject.c @@ -1451,18 +1451,12 @@ int exponent; int i; - PyObject *prev; PyObject *py_exponent = NULL; PyObject *numerator = NULL; PyObject *denominator = NULL; PyObject *result_pair = NULL; PyNumberMethods *long_methods = PyLong_Type.tp_as_number; -#define INPLACE_UPDATE(obj, call) \ - prev = obj; \ - obj = call; \ - Py_DECREF(prev); \ - CONVERT_TO_DOUBLE(v, self); if (Py_IS_INFINITY(self)) { @@ -1489,29 +1483,31 @@ to be truncated by PyLong_FromDouble(). */ numerator = PyLong_FromDouble(float_part); - if (numerator == NULL) goto error; + if (numerator == NULL) + goto error; + denominator = PyLong_FromLong(1); + if (denominator == NULL) + goto error; + py_exponent = PyLong_FromLong(Py_ABS(exponent)); + if (py_exponent == NULL) + goto error; /* fold in 2**exponent */ - denominator = PyLong_FromLong(1); - py_exponent = PyLong_FromLong(labs((long)exponent)); - if (py_exponent == NULL) goto error; - INPLACE_UPDATE(py_exponent, - long_methods->nb_lshift(denominator, py_exponent)); - if (py_exponent == NULL) goto error; if (exponent > 0) { - INPLACE_UPDATE(numerator, - long_methods->nb_multiply(numerator, py_exponent)); - if (numerator == NULL) goto error; + Py_SETREF(numerator, + long_methods->nb_lshift(numerator, py_exponent)); + if (numerator == NULL) + goto error; } else { - Py_DECREF(denominator); - denominator = py_exponent; - py_exponent = NULL; + Py_SETREF(denominator, + long_methods->nb_lshift(denominator, py_exponent)); + if (denominator == NULL) + goto error; } result_pair = PyTuple_Pack(2, numerator, denominator); -#undef INPLACE_UPDATE error: Py_XDECREF(py_exponent); Py_XDECREF(denominator); -- Repository URL: https://hg.python.org/cpython

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cpython: Issue #25971: Optimized creating Fractions from floats by 2 times and from
by serhiy.storchaka 30 Dec '15

30 Dec '15

https://hg.python.org/cpython/rev/284026a8af9e changeset: 99716:284026a8af9e user: Serhiy Storchaka <storchaka(a)gmail.com> date: Tue Dec 29 22:34:23 2015 +0200 summary: Issue #25971: Optimized creating Fractions from floats by 2 times and from Decimals by 3 times. Unified error messages in float.as_integer_ratio(), Decimal.as_integer_ratio(), and Fraction constructors. files: Lib/_pydecimal.py | 6 +--- Lib/fractions.py | 32 +++---------------------- Lib/test/test_fractions.py | 14 +++++----- Misc/NEWS | 3 ++ Objects/floatobject.c | 12 ++++---- 5 files changed, 22 insertions(+), 45 deletions(-) diff --git a/Lib/_pydecimal.py b/Lib/_pydecimal.py --- a/Lib/_pydecimal.py +++ b/Lib/_pydecimal.py @@ -1026,11 +1026,9 @@ """ if self._is_special: if self.is_nan(): - raise ValueError("Cannot pass NaN " - "to decimal.as_integer_ratio.") + raise ValueError("cannot convert NaN to integer ratio") else: - raise OverflowError("Cannot pass infinity " - "to decimal.as_integer_ratio.") + raise OverflowError("cannot convert Infinity to integer ratio") if not self: return 0, 1 diff --git a/Lib/fractions.py b/Lib/fractions.py --- a/Lib/fractions.py +++ b/Lib/fractions.py @@ -125,17 +125,9 @@ self._denominator = numerator.denominator return self - elif isinstance(numerator, float): - # Exact conversion from float - value = Fraction.from_float(numerator) - self._numerator = value._numerator - self._denominator = value._denominator - return self - - elif isinstance(numerator, Decimal): - value = Fraction.from_decimal(numerator) - self._numerator = value._numerator - self._denominator = value._denominator + elif isinstance(numerator, (float, Decimal)): + # Exact conversion + self._numerator, self._denominator = numerator.as_integer_ratio() return self elif isinstance(numerator, str): @@ -210,10 +202,6 @@ elif not isinstance(f, float): raise TypeError("%s.from_float() only takes floats, not %r (%s)" % (cls.__name__, f, type(f).__name__)) - if math.isnan(f): - raise ValueError("Cannot convert %r to %s." % (f, cls.__name__)) - if math.isinf(f): - raise OverflowError("Cannot convert %r to %s." % (f, cls.__name__)) return cls(*f.as_integer_ratio()) @classmethod @@ -226,19 +214,7 @@ raise TypeError( "%s.from_decimal() only takes Decimals, not %r (%s)" % (cls.__name__, dec, type(dec).__name__)) - if dec.is_infinite(): - raise OverflowError( - "Cannot convert %s to %s." % (dec, cls.__name__)) - if dec.is_nan(): - raise ValueError("Cannot convert %s to %s." % (dec, cls.__name__)) - sign, digits, exp = dec.as_tuple() - digits = int(''.join(map(str, digits))) - if sign: - digits = -digits - if exp >= 0: - return cls(digits * 10 ** exp) - else: - return cls(digits, 10 ** -exp) + return cls(*dec.as_integer_ratio()) def limit_denominator(self, max_denominator=1000000): """Closest Fraction to self with denominator at most max_denominator. diff --git a/Lib/test/test_fractions.py b/Lib/test/test_fractions.py --- a/Lib/test/test_fractions.py +++ b/Lib/test/test_fractions.py @@ -263,13 +263,13 @@ nan = inf - inf # bug 16469: error types should be consistent with float -> int self.assertRaisesMessage( - OverflowError, "Cannot convert inf to Fraction.", + OverflowError, "cannot convert Infinity to integer ratio", F.from_float, inf) self.assertRaisesMessage( - OverflowError, "Cannot convert -inf to Fraction.", + OverflowError, "cannot convert Infinity to integer ratio", F.from_float, -inf) self.assertRaisesMessage( - ValueError, "Cannot convert nan to Fraction.", + ValueError, "cannot convert NaN to integer ratio", F.from_float, nan) def testFromDecimal(self): @@ -284,16 +284,16 @@ # bug 16469: error types should be consistent with decimal -> int self.assertRaisesMessage( - OverflowError, "Cannot convert Infinity to Fraction.", + OverflowError, "cannot convert Infinity to integer ratio", F.from_decimal, Decimal("inf")) self.assertRaisesMessage( - OverflowError, "Cannot convert -Infinity to Fraction.", + OverflowError, "cannot convert Infinity to integer ratio", F.from_decimal, Decimal("-inf")) self.assertRaisesMessage( - ValueError, "Cannot convert NaN to Fraction.", + ValueError, "cannot convert NaN to integer ratio", F.from_decimal, Decimal("nan")) self.assertRaisesMessage( - ValueError, "Cannot convert sNaN to Fraction.", + ValueError, "cannot convert NaN to integer ratio", F.from_decimal, Decimal("snan")) def testLimitDenominator(self): diff --git a/Misc/NEWS b/Misc/NEWS --- a/Misc/NEWS +++ b/Misc/NEWS @@ -126,6 +126,9 @@ Library ------- +- Issue #25971: Optimized creating Fractions from floats by 2 times and from + Decimals by 3 times. + - Issue #25802: Document as deprecated the remaining implementations of importlib.abc.Loader.load_module(). diff --git a/Objects/floatobject.c b/Objects/floatobject.c --- a/Objects/floatobject.c +++ b/Objects/floatobject.c @@ -1466,14 +1466,14 @@ CONVERT_TO_DOUBLE(v, self); if (Py_IS_INFINITY(self)) { - PyErr_SetString(PyExc_OverflowError, - "Cannot pass infinity to float.as_integer_ratio."); - return NULL; + PyErr_SetString(PyExc_OverflowError, + "cannot convert Infinity to integer ratio"); + return NULL; } if (Py_IS_NAN(self)) { - PyErr_SetString(PyExc_ValueError, - "Cannot pass NaN to float.as_integer_ratio."); - return NULL; + PyErr_SetString(PyExc_ValueError, + "cannot convert NaN to integer ratio"); + return NULL; } PyFPE_START_PROTECT("as_integer_ratio", goto error); -- Repository URL: https://hg.python.org/cpython

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cpython (merge 3.5 -> default): merge 3.5 (#25973)
by benjamin.peterson 29 Dec '15

29 Dec '15

https://hg.python.org/cpython/rev/c64e68d703cf changeset: 99715:c64e68d703cf parent: 99713:e04cd497aa41 parent: 99714:4fa8c0c69ee9 user: Benjamin Peterson <benjamin(a)python.org> date: Tue Dec 29 10:08:51 2015 -0600 summary: merge 3.5 (#25973) files: Lib/test/test_syntax.py | 8 ++++++++ Misc/NEWS | 3 +++ Python/symtable.c | 24 ++++++++++++++++-------- 3 files changed, 27 insertions(+), 8 deletions(-) diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py --- a/Lib/test/test_syntax.py +++ b/Lib/test/test_syntax.py @@ -416,6 +416,14 @@ ## ... ## SyntaxWarning: name 'x' is assigned to before nonlocal declaration + From https://bugs.python.org/issue25973 + >>> class A: + ... def f(self): + ... nonlocal __x + Traceback (most recent call last): + ... + SyntaxError: no binding for nonlocal '_A__x' found + This tests assignment-context; there was a bug in Python 2.5 where compiling a complex 'if' (one with 'elif') would fail to notice an invalid suite, diff --git a/Misc/NEWS b/Misc/NEWS --- a/Misc/NEWS +++ b/Misc/NEWS @@ -10,6 +10,9 @@ Core and Builtins ----------------- +- Issue #25973: Fix segfault when an invalid nonlocal statement binds a name + starting with two underscores. + - Issue #22995: Instances of extension types with a state that aren't subclasses of list or dict and haven't implemented any pickle-related methods (__reduce__, __reduce_ex__, __getnewargs__, __getnewargs_ex__, diff --git a/Python/symtable.c b/Python/symtable.c --- a/Python/symtable.c +++ b/Python/symtable.c @@ -368,15 +368,20 @@ Py_ssize_t i; PyObject *data; assert(ste->ste_directives); - for (i = 0; ; i++) { + for (i = 0; i < PyList_GET_SIZE(ste->ste_directives); i++) { data = PyList_GET_ITEM(ste->ste_directives, i); assert(PyTuple_CheckExact(data)); - if (PyTuple_GET_ITEM(data, 0) == name) - break; + assert(PyUnicode_CheckExact(PyTuple_GET_ITEM(data, 0))); + if (PyUnicode_Compare(PyTuple_GET_ITEM(data, 0), name) == 0) { + PyErr_SyntaxLocationObject(ste->ste_table->st_filename, + PyLong_AsLong(PyTuple_GET_ITEM(data, 1)), + PyLong_AsLong(PyTuple_GET_ITEM(data, 2))); + + return 0; + } } - PyErr_SyntaxLocationObject(ste->ste_table->st_filename, - PyLong_AsLong(PyTuple_GET_ITEM(data, 1)), - PyLong_AsLong(PyTuple_GET_ITEM(data, 2))); + PyErr_SetString(PyExc_RuntimeError, + "BUG: internal directive bookkeeping broken"); return 0; } @@ -1115,14 +1120,17 @@ static int symtable_record_directive(struct symtable *st, identifier name, stmt_ty s) { - PyObject *data; + PyObject *data, *mangled; int res; if (!st->st_cur->ste_directives) { st->st_cur->ste_directives = PyList_New(0); if (!st->st_cur->ste_directives) return 0; } - data = Py_BuildValue("(Oii)", name, s->lineno, s->col_offset); + mangled = _Py_Mangle(st->st_private, name); + if (!mangled) + return 0; + data = Py_BuildValue("(Nii)", mangled, s->lineno, s->col_offset); if (!data) return 0; res = PyList_Append(st->st_cur->ste_directives, data); -- Repository URL: https://hg.python.org/cpython

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