Mailman 3 February 2005 - Python-checkins

python/nondist/peps pep-0309.txt, 1.7, 1.8 pep-0000.txt, 1.300, 1.301
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/nondist/peps In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv19270 Modified Files: pep-0309.txt pep-0000.txt Log Message: Update PEP 309 and mark as final (checked-in to cvs). Index: pep-0309.txt =================================================================== RCS file: /cvsroot/python/python/nondist/peps/pep-0309.txt,v retrieving revision 1.7 retrieving revision 1.8 diff -u -d -r1.7 -r1.8 --- pep-0309.txt 27 Aug 2004 13:29:47 -0000 1.7 +++ pep-0309.txt 28 Feb 2005 19:53:29 -0000 1.8 @@ -3,11 +3,11 @@ Version: $Revision$ Last-Modified: $Date$ Author: Peter Harris <scav(a)blueyonder.co.uk> -Status: Accepted +Status: Final Type: Standards Track Content-Type: text/x-rst Created: 08-Feb-2003 -Python-Version: 2.4 +Python-Version: 2.5 Post-History: 10-Feb-2003, 27-Feb-2003, 22-Feb-2004 @@ -25,6 +25,19 @@ An implementation has been submitted to SourceForge [2]_. +Acceptance +========== + +Patch #941881 was accepted and applied in 2005 for Py2.5. It is +essentially as outlined here, a partial() type constructor binding +leftmost positional arguments and any keywords. The partial object has +three read-only attributes func, args, and keywords. Calls to the partial +object can specify keywords that override those in the object itself. + +There is a separate and continuing discussion of whether to modify the +partial implementation with a __get__ method to more closely emulate +the behavior of an equivalent function. + Motivation ========== Index: pep-0000.txt =================================================================== RCS file: /cvsroot/python/python/nondist/peps/pep-0000.txt,v retrieving revision 1.300 retrieving revision 1.301 diff -u -d -r1.300 -r1.301 --- pep-0000.txt 12 Feb 2005 22:02:05 -0000 1.300 +++ pep-0000.txt 28 Feb 2005 19:53:29 -0000 1.301 @@ -63,7 +63,6 @@ Accepted PEPs (accepted; may not be implemented yet) - SA 309 Partial Function Application Harris SA 328 Imports: Multi-Line and Absolute/Relative Aahz Open PEPs (under consideration) @@ -168,6 +167,7 @@ SF 293 Codec Error Handling Callbacks Dörwald SF 305 CSV File API Montanaro, et al SF 307 Extensions to the pickle protocol GvR, Peters + SF 309 Partial Function Application Harris SF 311 Simplified GIL Acquisition for Extensions Hammond SF 318 Decorators for Functions and Methods Smith, et al IF 320 Python 2.4 Release Schedule Warsaw, et al @@ -343,7 +343,7 @@ I 306 How to Change Python's Grammar Hudson SF 307 Extensions to the pickle protocol GvR, Peters SR 308 If-then-else expression GvR, Hettinger - SA 309 Partial Function Application Harris + SF 309 Partial Function Application Harris S 310 Reliable Acquisition/Release Pairs Hudson, Moore SF 311 Simplified GIL Acquisition for Extensions Hammond S 312 Simple Implicit Lambda Suzi, Martelli

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python/dist/src/Misc NEWS,1.1246,1.1247
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/dist/src/Misc In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14403/Misc Modified Files: NEWS Log Message: SF patch #941881: PEP 309 Implementation (Partial Function Application). Combined efforts of many including Peter Harris, Hye-Shik Chang, Martin v. Löwis, Nick Coghlan, Paul Moore, and Raymond Hettinger. Index: NEWS =================================================================== RCS file: /cvsroot/python/python/dist/src/Misc/NEWS,v retrieving revision 1.1246 retrieving revision 1.1247 diff -u -d -r1.1246 -r1.1247 --- NEWS 27 Feb 2005 20:33:22 -0000 1.1246 +++ NEWS 28 Feb 2005 19:39:23 -0000 1.1247 @@ -34,6 +34,8 @@ Extension Modules ----------------- +- Added functional.partial(). See PEP309. + - Patch #1093585: raise a ValueError for negative history items in readline. {remove_history,replace_history}

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python/dist/src setup.py,1.213,1.214
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/dist/src In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14403 Modified Files: setup.py Log Message: SF patch #941881: PEP 309 Implementation (Partial Function Application). Combined efforts of many including Peter Harris, Hye-Shik Chang, Martin v. Löwis, Nick Coghlan, Paul Moore, and Raymond Hettinger. Index: setup.py =================================================================== RCS file: /cvsroot/python/python/dist/src/setup.py,v retrieving revision 1.213 retrieving revision 1.214 diff -u -d -r1.213 -r1.214 --- setup.py 16 Feb 2005 00:07:16 -0000 1.213 +++ setup.py 28 Feb 2005 19:39:22 -0000 1.214 @@ -355,6 +355,8 @@ exts.append( Extension("_heapq", ["_heapqmodule.c"]) ) # operator.add() and similar goodies exts.append( Extension('operator', ['operator.c']) ) + # functional + exts.append( Extension("functional", ["functionalmodule.c"]) ) # Python C API test module exts.append( Extension('_testcapi', ['_testcapimodule.c']) ) # static Unicode character database

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python/dist/src/Doc/lib libfunctional.tex, NONE, 1.1 lib.tex, 1.237, 1.238
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/dist/src/Doc/lib In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14403/Doc/lib Modified Files: lib.tex Added Files: libfunctional.tex Log Message: SF patch #941881: PEP 309 Implementation (Partial Function Application). Combined efforts of many including Peter Harris, Hye-Shik Chang, Martin v. Löwis, Nick Coghlan, Paul Moore, and Raymond Hettinger. --- NEW FILE: libfunctional.tex --- \section{\module{functional} --- Higher order functions and operations on callable objects.} \declaremodule{standard}{functional} % standard library, in Python \moduleauthor{Peter Harris}{scav(a)blueyonder.co.uk} \moduleauthor{Raymond Hettinger}{python(a)rcn.com} \sectionauthor{Peter Harris}{scav(a)blueyonder.co.uk} \modulesynopsis{Higher-order functions and operations on callable objects.} The \module{functional} module is for higher-order functions: functions that act on or return other functions. In general, any callable object can be treated as a function for the purposes of this module. The \module{functional} module defines the following function: \begin{funcdesc}{partial}{func\optional{,*args}\optional{, **keywords}} Return a new \class{partial} object which when called will behave like \var{func} called with the positional arguments \var{args} and keyword arguments \var{keywords}. If more arguments are supplied to the call, they are appended to \var{args}. If additional keyword arguments are supplied, they extend and override \var{keywords}. Roughly equivalent to: \begin{verbatim} def partial(func, *args, **keywords): def newfunc(*fargs, **fkeywords): newkeywords = keywords.copy() newkeywords.update(fkeywords) return func(*(args + fargs), **newkeywords) newfunc.func = func newfunc.args = args newfunc.keywords = keywords return newfunc \end{verbatim} The \function{partial} is used for partial function application which ``freezes'' some portion of a function's arguments and/or keywords resulting in an new object with a simplified signature. For example, \function{partial} can be used to create a callable that behaves like the \function{int} function where the \var{base} argument defaults to two: \begin{verbatim} >>> basetwo = partial(int, base=2) >>> basetwo('10010') 18 \end{verbatim} \end{funcdesc} \subsection{\class{partial} Objects \label{partial-objects}} \class{partial} objects are callable objects created by \function{partial()}. They have three read-only attributes: \begin{memberdesc}[callable]{func}{} A callable object or function. Calls to the \class{partial} object will be forwarded to \member{func} with new arguments and keywords. \end{memberdesc} \begin{memberdesc}[tuple]{args}{} The leftmost positional arguments that will be prepended to the positional arguments provided to a \class{partial} object call. \end{memberdesc} \begin{memberdesc}[dict]{keywords}{} The keyword arguments that will be supplied when the \class{partial} object is called. \end{memberdesc} Index: lib.tex =================================================================== RCS file: /cvsroot/python/python/dist/src/Doc/lib/lib.tex,v retrieving revision 1.237 retrieving revision 1.238 diff -u -d -r1.237 -r1.238 --- lib.tex 23 Jan 2005 09:27:23 -0000 1.237 +++ lib.tex 28 Feb 2005 19:39:23 -0000 1.238 @@ -132,6 +132,7 @@ \input{libarray} \input{libsets} \input{libitertools} +\input{libfunctional} \input{libcfgparser} \input{libfileinput} \input{libcalendar}

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python/dist/src/PCbuild pythoncore.vcproj, 1.26, 1.27
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/dist/src/PCbuild In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14403/PCbuild Modified Files: pythoncore.vcproj Log Message: SF patch #941881: PEP 309 Implementation (Partial Function Application). Combined efforts of many including Peter Harris, Hye-Shik Chang, Martin v. Löwis, Nick Coghlan, Paul Moore, and Raymond Hettinger. Index: pythoncore.vcproj =================================================================== RCS file: /cvsroot/python/python/dist/src/PCbuild/pythoncore.vcproj,v retrieving revision 1.26 retrieving revision 1.27 diff -u -d -r1.26 -r1.27 --- pythoncore.vcproj 1 Dec 2004 19:40:45 -0000 1.26 +++ pythoncore.vcproj 28 Feb 2005 19:39:44 -0000 1.27 @@ -1294,6 +1294,33 @@ </FileConfiguration> </File> <File + RelativePath="..\Modules\functionalmodule.c"> + <FileConfiguration + Name="Release|Win32"> + <Tool + Name="VCCLCompilerTool" + Optimization="2" + AdditionalIncludeDirectories="" + PreprocessorDefinitions="NDEBUG;WIN32;_WINDOWS;USE_DL_EXPORT;$(NoInherit)"/> + </FileConfiguration> + <FileConfiguration + Name="Debug|Win32"> + <Tool + Name="VCCLCompilerTool" + Optimization="0" + AdditionalIncludeDirectories="" + PreprocessorDefinitions="_DEBUG;USE_DL_EXPORT;WIN32;_WINDOWS;$(NoInherit)"/> + </FileConfiguration> + <FileConfiguration + Name="ReleaseItanium|Win32"> + <Tool + Name="VCCLCompilerTool" + Optimization="2" + AdditionalIncludeDirectories="" + PreprocessorDefinitions="NDEBUG;WIN32;_WINDOWS;USE_DL_EXPORT;$(NoInherit)"/> + </FileConfiguration> + </File> + <File RelativePath="..\Python\future.c"> <FileConfiguration Name="Release|Win32">

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python/dist/src/PC/VC6 pythoncore.dsp,1.16,1.17
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/dist/src/PC/VC6 In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14403/PC/VC6 Modified Files: pythoncore.dsp Log Message: SF patch #941881: PEP 309 Implementation (Partial Function Application). Combined efforts of many including Peter Harris, Hye-Shik Chang, Martin v. Löwis, Nick Coghlan, Paul Moore, and Raymond Hettinger. Index: pythoncore.dsp =================================================================== RCS file: /cvsroot/python/python/dist/src/PC/VC6/pythoncore.dsp,v retrieving revision 1.16 retrieving revision 1.17 diff -u -d -r1.16 -r1.17 --- pythoncore.dsp 2 Dec 2004 08:53:14 -0000 1.16 +++ pythoncore.dsp 28 Feb 2005 19:39:44 -0000 1.17 @@ -301,6 +301,10 @@ # End Source File # Begin Source File +SOURCE=..\..\Modules\functionalmodule.c +# End Source File +# Begin Source File + SOURCE=..\..\Python\future.c # End Source File # Begin Source File

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python/dist/src/PC config.c,1.51,1.52
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/dist/src/PC In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14403/PC Modified Files: config.c Log Message: SF patch #941881: PEP 309 Implementation (Partial Function Application). Combined efforts of many including Peter Harris, Hye-Shik Chang, Martin v. Löwis, Nick Coghlan, Paul Moore, and Raymond Hettinger. Index: config.c =================================================================== RCS file: /cvsroot/python/python/dist/src/PC/config.c,v retrieving revision 1.51 retrieving revision 1.52 diff -u -d -r1.51 -r1.52 --- config.c 12 Oct 2004 21:48:56 -0000 1.51 +++ config.c 28 Feb 2005 19:39:44 -0000 1.52 @@ -53,6 +53,7 @@ extern void initparser(void); extern void init_winreg(void); extern void initdatetime(void); +extern void initfunctional(void); extern void init_multibytecodec(void); extern void init_codecs_cn(void); @@ -124,6 +125,7 @@ {"parser", initparser}, {"_winreg", init_winreg}, {"datetime", initdatetime}, + {"functional", initfunctional}, {"xxsubtype", initxxsubtype}, {"zipimport", initzipimport},

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python/dist/src/Modules functionalmodule.c, NONE, 1.1
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/dist/src/Modules In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14403/Modules Added Files: functionalmodule.c Log Message: SF patch #941881: PEP 309 Implementation (Partial Function Application). Combined efforts of many including Peter Harris, Hye-Shik Chang, Martin v. Löwis, Nick Coghlan, Paul Moore, and Raymond Hettinger. --- NEW FILE: functionalmodule.c --- #include "Python.h" #include "structmember.h" /* Functional module written and maintained by Hye-Shik Chang <perky(a)FreeBSD.org> with adaptations by Raymond Hettinger <python(a)rcn.com> Copyright (c) 2004, 2005 Python Software Foundation. All rights reserved. */ /* partial object **********************************************************/ typedef struct { PyObject_HEAD PyObject *fn; PyObject *args; PyObject *kw; } partialobject; static PyTypeObject partial_type; static PyObject * partial_new(PyTypeObject *type, PyObject *args, PyObject *kw) { PyObject *func; partialobject *pto; if (PyTuple_GET_SIZE(args) < 1) { PyErr_SetString(PyExc_TypeError, "type 'partial' takes at least one argument"); return NULL; } func = PyTuple_GET_ITEM(args, 0); if (!PyCallable_Check(func)) { PyErr_SetString(PyExc_TypeError, "the first argument must be callable"); return NULL; } /* create partialobject structure */ pto = (partialobject *)type->tp_alloc(type, 0); if (pto == NULL) return NULL; pto->fn = func; Py_INCREF(func); pto->args = PyTuple_GetSlice(args, 1, INT_MAX); if (pto->args == NULL) { pto->kw = NULL; Py_DECREF(pto); return NULL; } if (kw != NULL) { pto->kw = PyDict_Copy(kw); if (pto->kw == NULL) { Py_DECREF(pto); return NULL; } } else { pto->kw = Py_None; Py_INCREF(Py_None); } return (PyObject *)pto; } static void partial_dealloc(partialobject *pto) { PyObject_GC_UnTrack(pto); Py_XDECREF(pto->fn); Py_XDECREF(pto->args); Py_XDECREF(pto->kw); pto->ob_type->tp_free(pto); } static PyObject * partial_call(partialobject *pto, PyObject *args, PyObject *kw) { PyObject *ret; PyObject *argappl = NULL, *kwappl = NULL; assert (PyCallable_Check(pto->fn)); assert (PyTuple_Check(pto->args)); assert (pto->kw == Py_None || PyDict_Check(pto->kw)); if (PyTuple_GET_SIZE(pto->args) == 0) { argappl = args; Py_INCREF(args); } else if (PyTuple_GET_SIZE(args) == 0) { argappl = pto->args; Py_INCREF(pto->args); } else { argappl = PySequence_Concat(pto->args, args); if (argappl == NULL) return NULL; } if (pto->kw == Py_None) { kwappl = kw; Py_XINCREF(kw); } else { kwappl = PyDict_Copy(pto->kw); if (kwappl == NULL) { Py_DECREF(argappl); return NULL; } if (kw != NULL) { if (PyDict_Merge(kwappl, kw, 1) != 0) { Py_DECREF(argappl); Py_DECREF(kwappl); return NULL; } } } ret = PyObject_Call(pto->fn, argappl, kwappl); Py_DECREF(argappl); Py_XDECREF(kwappl); return ret; } static int partial_traverse(partialobject *pto, visitproc visit, void *arg) { Py_VISIT(pto->fn); Py_VISIT(pto->args); Py_VISIT(pto->kw); return 0; } PyDoc_STRVAR(partial_doc, "partial(func, *args, **keywords) - new function with partial application\n\ of the given arguments and keywords.\n"); #define OFF(x) offsetof(partialobject, x) static PyMemberDef partial_memberlist[] = { {"func", T_OBJECT, OFF(fn), READONLY, "function object to use in future partial calls"}, {"args", T_OBJECT, OFF(args), READONLY, "tuple of arguments to future partial calls"}, {"keywords", T_OBJECT, OFF(kw), READONLY, "dictionary of keyword arguments to future partial calls"}, {NULL} /* Sentinel */ }; static PyTypeObject partial_type = { PyObject_HEAD_INIT(NULL) 0, /* ob_size */ "functional.partial", /* tp_name */ sizeof(partialobject), /* tp_basicsize */ 0, /* tp_itemsize */ /* methods */ (destructor)partial_dealloc, /* tp_dealloc */ 0, /* tp_print */ 0, /* tp_getattr */ 0, /* tp_setattr */ 0, /* tp_compare */ 0, /* tp_repr */ 0, /* tp_as_number */ 0, /* tp_as_sequence */ 0, /* tp_as_mapping */ 0, /* tp_hash */ (ternaryfunc)partial_call, /* tp_call */ 0, /* tp_str */ PyObject_GenericGetAttr, /* tp_getattro */ 0, /* tp_setattro */ 0, /* tp_as_buffer */ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_BASETYPE, /* tp_flags */ partial_doc, /* tp_doc */ (traverseproc)partial_traverse, /* tp_traverse */ 0, /* tp_clear */ 0, /* tp_richcompare */ 0, /* tp_weaklistoffset */ 0, /* tp_iter */ 0, /* tp_iternext */ 0, /* tp_methods */ partial_memberlist, /* tp_members */ 0, /* tp_getset */ 0, /* tp_base */ 0, /* tp_dict */ 0, /* tp_descr_get */ 0, /* tp_descr_set */ 0, /* tp_dictoffset */ 0, /* tp_init */ 0, /* tp_alloc */ partial_new, /* tp_new */ PyObject_GC_Del, /* tp_free */ }; /* module level code ********************************************************/ PyDoc_STRVAR(module_doc, "Tools for functional programming."); static PyMethodDef module_methods[] = { {NULL, NULL} /* sentinel */ }; PyMODINIT_FUNC initfunctional(void) { int i; PyObject *m; char *name; PyTypeObject *typelist[] = { &partial_type, NULL }; m = Py_InitModule3("functional", module_methods, module_doc); for (i=0 ; typelist[i] != NULL ; i++) { if (PyType_Ready(typelist[i]) < 0) return; name = strchr(typelist[i]->tp_name, '.'); assert (name != NULL); Py_INCREF(typelist[i]); PyModule_AddObject(m, name+1, (PyObject *)typelist[i]); } }

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[Python-checkins] python/dist/src/Lib/test test_functional.py, NONE, 1.1
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/dist/src/Lib/test In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14403/Lib/test Added Files: test_functional.py Log Message: SF patch #941881: PEP 309 Implementation (Partial Function Application). Combined efforts of many including Peter Harris, Hye-Shik Chang, Martin v. Löwis, Nick Coghlan, Paul Moore, and Raymond Hettinger. --- NEW FILE: test_functional.py --- import functional import unittest from test import test_support @staticmethod def PythonPartial(func, *args, **keywords): 'Pure Python approximation of partial()' def newfunc(*fargs, **fkeywords): newkeywords = keywords.copy() newkeywords.update(fkeywords) return func(*(args + fargs), **newkeywords) newfunc.func = func newfunc.args = args newfunc.keywords = keywords return newfunc def capture(*args, **kw): """capture all positional and keyword arguments""" return args, kw class TestPartial(unittest.TestCase): thetype = functional.partial def test_basic_examples(self): p = self.thetype(capture, 1, 2, a=10, b=20) self.assertEqual(p(3, 4, b=30, c=40), ((1, 2, 3, 4), dict(a=10, b=30, c=40))) p = self.thetype(map, lambda x: x*10) self.assertEqual(p([1,2,3,4]), [10, 20, 30, 40]) def test_attributes(self): p = self.thetype(capture, 1, 2, a=10, b=20) # attributes should be readable self.assertEqual(p.func, capture) self.assertEqual(p.args, (1, 2)) self.assertEqual(p.keywords, dict(a=10, b=20)) # attributes should not be writable if not isinstance(self.thetype, type): return self.assertRaises(TypeError, setattr, p, 'func', map) self.assertRaises(TypeError, setattr, p, 'args', (1, 2)) self.assertRaises(TypeError, setattr, p, 'keywords', dict(a=1, b=2)) def test_argument_checking(self): self.assertRaises(TypeError, self.thetype) # need at least a func arg try: self.thetype(2)() except TypeError: pass else: self.fail('First arg not checked for callability') def test_protection_of_callers_dict_argument(self): # a caller's dictionary should not be altered by partial def func(a=10, b=20): return a d = {'a':3} p = self.thetype(func, a=5) self.assertEqual(p(**d), 3) self.assertEqual(d, {'a':3}) p(b=7) self.assertEqual(d, {'a':3}) def test_arg_combinations(self): # exercise special code paths for zero args in either partial # object or the caller p = self.thetype(capture) self.assertEqual(p(), ((), {})) self.assertEqual(p(1,2), ((1,2), {})) p = self.thetype(capture, 1, 2) self.assertEqual(p(), ((1,2), {})) self.assertEqual(p(3,4), ((1,2,3,4), {})) def test_kw_combinations(self): # exercise special code paths for no keyword args in # either the partial object or the caller p = self.thetype(capture) self.assertEqual(p(), ((), {})) self.assertEqual(p(a=1), ((), {'a':1})) p = self.thetype(capture, a=1) self.assertEqual(p(), ((), {'a':1})) self.assertEqual(p(b=2), ((), {'a':1, 'b':2})) # keyword args in the call override those in the partial object self.assertEqual(p(a=3, b=2), ((), {'a':3, 'b':2})) def test_positional(self): # make sure positional arguments are captured correctly for args in [(), (0,), (0,1), (0,1,2), (0,1,2,3)]: p = self.thetype(capture, *args) expected = args + ('x',) got, empty = p('x') self.failUnless(expected == got and empty == {}) def test_keyword(self): # make sure keyword arguments are captured correctly for a in ['a', 0, None, 3.5]: p = self.thetype(capture, a=a) expected = {'a':a,'x':None} empty, got = p(x=None) self.failUnless(expected == got and empty == ()) def test_no_side_effects(self): # make sure there are no side effects that affect subsequent calls p = self.thetype(capture, 0, a=1) args1, kw1 = p(1, b=2) self.failUnless(args1 == (0,1) and kw1 == {'a':1,'b':2}) args2, kw2 = p() self.failUnless(args2 == (0,) and kw2 == {'a':1}) def test_error_propagation(self): def f(x, y): x / y self.assertRaises(ZeroDivisionError, self.thetype(f, 1, 0)) self.assertRaises(ZeroDivisionError, self.thetype(f, 1), 0) self.assertRaises(ZeroDivisionError, self.thetype(f), 1, 0) self.assertRaises(ZeroDivisionError, self.thetype(f, y=0), 1) class PartialSubclass(functional.partial): pass class TestPartialSubclass(TestPartial): thetype = PartialSubclass class TestPythonPartial(TestPartial): thetype = PythonPartial def test_main(verbose=None): import sys test_classes = ( TestPartial, TestPartialSubclass, TestPythonPartial, ) test_support.run_unittest(*test_classes) # verify reference counting if verbose and hasattr(sys, "gettotalrefcount"): import gc counts = [None] * 5 for i in xrange(len(counts)): test_support.run_unittest(*test_classes) gc.collect() counts[i] = sys.gettotalrefcount() print counts if __name__ == '__main__': test_main(verbose=True)

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python/dist/src/Lib sre_parse.py, 1.63, 1.64 sre_compile.py, 1.56, 1.57
by rhettinger＠users.sourceforge.net 28 Feb '05

28 Feb '05

Update of /cvsroot/python/python/dist/src/Lib In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv12064 Modified Files: sre_parse.py sre_compile.py Log Message: Complete the previous effort to factor out constant expressions and improve the speed of the if/elif/else blocks. Index: sre_parse.py =================================================================== RCS file: /cvsroot/python/python/dist/src/Lib/sre_parse.py,v retrieving revision 1.63 retrieving revision 1.64 diff -u -d -r1.63 -r1.64 --- sre_parse.py 3 Sep 2004 20:15:56 -0000 1.63 +++ sre_parse.py 28 Feb 2005 19:27:52 -0000 1.64 @@ -16,15 +16,21 @@ from sre_constants import * +def set(seq): + s = {} + for elem in seq: + s[elem] = 1 + return s + SPECIAL_CHARS = ".\\[{()*+?^$|" REPEAT_CHARS = "*+?{" -DIGITS = tuple("0123456789") +DIGITS = set("0123456789") -OCTDIGITS = tuple("01234567") -HEXDIGITS = tuple("0123456789abcdefABCDEF") +OCTDIGITS = set("01234567") +HEXDIGITS = set("0123456789abcdefABCDEF") -WHITESPACE = tuple(" \t\n\r\v\f") +WHITESPACE = set(" \t\n\r\v\f") ESCAPES = { r"\a": (LITERAL, ord("\a")), @@ -371,6 +377,11 @@ subpattern.append((GROUPREF_EXISTS, (condgroup, item_yes, item_no))) return subpattern +_PATTERNENDERS = set("|)") +_ASSERTCHARS = set("=!<") +_LOOKBEHINDASSERTCHARS = set("=!") +_REPEATCODES = set([MIN_REPEAT, MAX_REPEAT]) + def _parse(source, state): # parse a simple pattern subpattern = SubPattern(state) @@ -380,10 +391,10 @@ sourceget = source.get sourcematch = source.match _len = len - PATTERNENDERS = ("|", ")") - ASSERTCHARS = ("=", "!", "<") - LOOKBEHINDASSERTCHARS = ("=", "!") - REPEATCODES = (MIN_REPEAT, MAX_REPEAT) + PATTERNENDERS = _PATTERNENDERS + ASSERTCHARS = _ASSERTCHARS + LOOKBEHINDASSERTCHARS = _LOOKBEHINDASSERTCHARS + REPEATCODES = _REPEATCODES while 1: Index: sre_compile.py =================================================================== RCS file: /cvsroot/python/python/dist/src/Lib/sre_compile.py,v retrieving revision 1.56 retrieving revision 1.57 diff -u -d -r1.56 -r1.57 --- sre_compile.py 15 Oct 2004 06:15:08 -0000 1.56 +++ sre_compile.py 28 Feb 2005 19:27:52 -0000 1.57 @@ -24,14 +24,25 @@ def _identityfunction(x): return x +def set(seq): + s = {} + for elem in seq: + s[elem] = 1 + return s + +_LITERAL_CODES = set([LITERAL, NOT_LITERAL]) +_REPEATING_CODES = set([REPEAT, MIN_REPEAT, MAX_REPEAT]) +_SUCCESS_CODES = set([SUCCESS, FAILURE]) +_ASSERT_CODES = set([ASSERT, ASSERT_NOT]) + def _compile(code, pattern, flags): # internal: compile a (sub)pattern emit = code.append _len = len - LITERAL_CODES = {LITERAL:1, NOT_LITERAL:1} - REPEATING_CODES = {REPEAT:1, MIN_REPEAT:1, MAX_REPEAT:1} - SUCCESS_CODES = {SUCCESS:1, FAILURE:1} - ASSERT_CODES = {ASSERT:1, ASSERT_NOT:1} + LITERAL_CODES = _LITERAL_CODES + REPEATING_CODES = _REPEATING_CODES + SUCCESS_CODES = _SUCCESS_CODES + ASSERT_CODES = _ASSERT_CODES for op, av in pattern: if op in LITERAL_CODES: if flags & SRE_FLAG_IGNORECASE:

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