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* - When method objects have an attribute that can be satisfied eitherGuido van Rossum2003-11-221-28/+30
| | | | | | | | | | by the function object or by the method object, the function object's attribute usually wins. Christian Tismer pointed out that that this is really a mistake, because this only happens for special methods (like __reduce__) where the method object's version is really more appropriate than the function's attribute. So from now on, all method attributes will have precedence over function attributes with the same name.
* Deleting cyclic object comparison.Armin Rigo2003-10-281-6/+4
| | | | | SF patch 825639 http://mail.python.org/pipermail/python-dev/2003-October/039445.html
* Simplify and speedup uses of Py_BuildValue():Raymond Hettinger2003-10-121-14/+14
| | | | | | * Py_BuildValue("(OOO)",a,b,c) --> PyTuple_Pack(3,a,b,c) * Py_BuildValue("()",a) --> PyTuple_New(0) * Py_BuildValue("O", a) --> Py_INCREF(a)
* Fix leak in classobject.c. The leak surfaced on the error exit whenRaymond Hettinger2003-09-161-0/+1
| | | | | hashing a class that does not define __hash__ but does define a comparison.
* Make it possible to call instancemethod() with 2 arguments.Guido van Rossum2003-04-091-2/+2
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* New private API function _PyInstance_Lookup. gc will use this to figureTim Peters2003-04-071-0/+21
| | | | out whether __del__ exists, without executing any Python-level code.
* Refactor instancemethod_descr_get() to (a) be more clear, (b) be safeGuido van Rossum2003-02-111-8/+18
| | | | | in the light of weird args, and (c) not to expect None (which is now changed to NULL by slot_tp_descr_get()).
* SF patch #659536: Use PyArg_UnpackTuple where possible.Raymond Hettinger2002-12-291-1/+1
| | | | | | | Obtain cleaner coding and a system wide performance boost by using the fast, pre-parsed PyArg_Unpack function instead of PyArg_ParseTuple function which is driven by a format string.
* Change issubclass() so that recursive tuples (directly or indirectlyWalter Dörwald2002-12-121-1/+2
| | | | | | containing class objects) are allowed as the second argument. This makes issubclass() more similar to isinstance() where recursive tuples are allowed too.
* Enhance issubclass() and PyObject_IsSubclass() so that a tuple isWalter Dörwald2002-12-121-0/+7
| | | | | | | | | | | supported as the second argument. This has the same meaning as for isinstance(), i.e. issubclass(X, (A, B)) is equivalent to issubclass(X, A) or issubclass(X, B). Compared to isinstance(), this patch does not search the tuple recursively for classes, i.e. any entry in the tuple that is not a class, will result in a TypeError. This closes SF patch #649608.
* Since properties are supported here, is possible thatGuido van Rossum2002-10-291-13/+12
| | | | | | | instance_getattr2() raises an exception. Fix all code that made this assumption. Backport candidate.
* Fix (real! :-) memory leaks in half_cmp and half_binop.Guido van Rossum2002-10-181-1/+4
| | | | Perhaps found by NealN and valgrind. Will forward port.
* getinstclassname(): Squash new compiler wng in assert (comparison ofTim Peters2002-08-201-1/+1
| | | | signed vs unsigned).
* SF patch 576101, by Oren Tirosh: alternative implementation ofGuido van Rossum2002-08-191-20/+24
| | | | | | | | interning. I modified Oren's patch significantly, but the basic idea and most of the implementation is unchanged. Interned strings created with PyString_InternInPlace() are now mortal, and you must keep a reference to the resulting string around; use the new function PyString_InternImmortal() to create immortal interned strings.
* object.h special-build macro minefield: renamed all the new lexicalTim Peters2002-07-111-49/+38
| | | | | | | | | | | | | | | | | | | | | | | | | helper macros to something saner, and used them appropriately in other files too, to reduce #ifdef blocks. classobject.c, instance_dealloc(): One of my worst Python Memories is trying to fix this routine a few years ago when COUNT_ALLOCS was defined but Py_TRACE_REFS wasn't. The special-build code here is way too complicated. Now it's much simpler. Difference: in a Py_TRACE_REFS build, the instance is no longer in the doubly-linked list of live objects while its __del__ method is executing, and that may be visible via sys.getobjects() called from a __del__ method. Tough -- the object is presumed dead while its __del__ is executing anyway, and not calling _Py_NewReference() at the start allows enormous code simplification. typeobject.c, call_finalizer(): The special-build instance_dealloc() pain apparently spread to here too via cut-'n-paste, and this is much simpler now too. In addition, I didn't understand why this routine was calling _PyObject_GC_TRACK() after a resurrection, since there's no plausible way _PyObject_GC_UNTRACK() could have been called on the object by this point. I suspect it was left over from pasting the instance_delloc() code. Instead asserted that the object is still tracked. Caution: I suspect we don't have a test that actually exercises the subtype_dealloc() __del__-resurrected-me code.
* Removed WITH_CYCLE_GC #ifdef-ery. Holes:Tim Peters2002-07-071-3/+0
| | | | | | + I'm not sure what to do about configure.in. Left it alone. + Ditto pyexpat.c. Fred or Martin will know what to do.
* About the new but unreferenced new_class, Guido sez:Michael W. Hudson2002-06-181-15/+0
| | | | | | | > Looks like an experiment by Oren Tirosh that didn't get nuked. I > think you can safely lose it. It's gone.
* SF patch 568629 by Oren Tirosh: types made callable.Guido van Rossum2002-06-141-5/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These built-in functions are replaced by their (now callable) type: slice() buffer() and these types can also be called (but have no built-in named function named after them) classobj (type name used to be "class") code function instance instancemethod (type name used to be "instance method") The module "new" has been replaced with a small backward compatibility placeholder in Python. A large portion of the patch simply removes the new module from various platform-specific build recipes. The following binary Mac project files still have references to it: Mac/Build/PythonCore.mcp Mac/Build/PythonStandSmall.mcp Mac/Build/PythonStandalone.mcp [I've tweaked the code layout and the doc strings here and there, and added a comment to types.py about StringTypes vs. basestring. --Guido]
* Major cleanup operation: whenever there's a call that looks for anGuido van Rossum2002-06-131-10/+59
| | | | | | | | | | | | | optional attribute, only clear the exception when the internal getattr operation raised AttributeError. Many places in this file already had that policy; but just as many didn't, and there didn't seem to be any rhyme or reason to it. Be consistently cautious. Question: should I backport this? On the one hand it's a bugfix. On the other hand it's a change in behavior. Certain forms of buggy or just weird code would work in the past but raise an exception under the new rules; e.g. if you define a __getattr__ method that raises a non-AttributeError exception.
* Fix for SF bug 532646. This is a little simpler than what NealGuido van Rossum2002-06-131-1/+17
| | | | | suggested there, based upon a better analysis (__getattr__ is a red herring). Will backport to 2.2.
* Be smarter about clearing the weakref lists for instances, instance methods,Fred Drake2001-10-261-2/+4
| | | | | | and functions: we only need to call PyObject_ClearWeakRefs() if the weakref list is non-NULL. Since these objects are common but weakrefs are still unusual, saving the call at deallocation time makes a lot of sense.
* Fix for SF bug #472940: can't getattr() attribute shown by dir()Guido van Rossum2001-10-221-28/+1
| | | | | | | | | | There really isn't a good reason for instance method objects to have their own __dict__, __doc__ and __name__ properties that just delegate the request to the function (callable); the default attribute behavior already does this. The test suite had to be fixed because the error changes from TypeError to AttributeError.
* Protect references to tp_descr_get and tp_dict with the appropriate test:Guido van Rossum2001-10-171-9/+14
| | | | PyType_HasFeature(t, Py_TPFLAGS_HAVE_CLASS).
* SF bug [#466173] unpack TypeError unclearTim Peters2001-09-301-1/+1
| | | | | | Replaced 3 instances of "iter() of non-sequence" with "iteration over non-sequence". Restored "unpack non-sequence" for stuff like "a, b = 1".
* Add optional docstrings to getset descriptors. Fortunately, there'sGuido van Rossum2001-09-201-4/+4
| | | | | | | | | | no backwards compatibility to worry about, so I just pushed the 'closure' struct member to the back -- it's never used in the current code base (I may eliminate it, but that's more work because the getter and setter signatures would have to change.) As examples, I added actual docstrings to the getset attributes of a few types: file.closed, xxsubtype.spamdict.state.
* Add optional docstrings to member descriptors. For backwardsGuido van Rossum2001-09-201-4/+7
| | | | | | | | | | | | | | | compatibility, this required all places where an array of "struct memberlist" structures was declared that is referenced from a type's tp_members slot to change the type of the structure to PyMemberDef; "struct memberlist" is now only used by old code that still calls PyMember_Get/Set. The code in PyObject_GenericGetAttr/SetAttr now calls the new APIs PyMember_GetOne/SetOne, which take a PyMemberDef argument. As examples, I added actual docstrings to the attributes of a few types: file, complex, instance method, super, and xxsubtype.spamlist. Also converted the symtable to new style getattr.
* Properly repr classes without module names.Martin v. Löwis2001-09-181-1/+1
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* Redo the PyMethod attributes using a dir()-friendly approach, creatingGuido van Rossum2001-09-181-37/+69
| | | | | | | | | | | | | | | | | descriptors for each attribute. The getattr() implementation is similar to PyObject_GenericGetAttr(), but delegates to im_self instead of looking in __dict__; I couldn't do this as a wrapper around PyObject_GenericGetAttr(). XXX A problem here is that this is a case of *delegation*. dir() doesn't see exactly the same attributes that are actually defined; e.g. if the delegate is a Python function object, it supports attributes like func_code etc., but these are not visible to dir(); on the other hand, dynamic function attributes (stored in the function's __dict__) *are* visible to dir(). Maybe we need a mechanism to tell dir() about the delegation mechanism? I vaguely recall seeing a request in the newsgroup for a more formal definition of attribute delegation too. Sigh, time for a new PEP.
* Generalize operator.indexOf (PySequence_Index) to work with anyTim Peters2001-09-081-1/+2
| | | | | | | | | | iterable object. I'm not sure how that got overlooked before! Got rid of the internal _PySequence_IterContains, introduced a new internal _PySequence_IterSearch, and rewrote all the iteration-based "count of", "index of", and "is the object in it or not?" routines to just call the new function. I suppose it's slower this way, but the code duplication was getting depressing.
* PyClass_New(): put the extended Don Beaudry hook back in. When one ofGuido van Rossum2001-09-071-4/+14
| | | | | | | | | | | | | | | | the base classes is not a classic class, and its class (the metaclass) is callable, call the metaclass to do the deed. One effect of this is that, when mixing classic and new-style classes amongst the bases of a class, it doesn't matter whether the first base class is a classic class or not: you will always get the error "TypeError: metatype conflict among bases". (Formerly, with a classic class first, you'd get "TypeError: PyClass_New: base must be a class".) Another effect is that multiple inheritance from ExtensionClass.Base, with a classic class as the first class, transfers control to the ExtensionClass.Base class. This is what we need for SF #443239 (and also for running Zope under 2.2a4, before ExtensionClass is replaced).
* Add PyMethod_Function(), PyMethod_Self(), PyMethod_Class() back.Guido van Rossum2001-09-051-0/+30
| | | | | | While not even documented, they were clearly part of the C API, there's no great difficulty to support them, and it has the cool effect of not requiring any changes to ExtensionClass.c.
* Use new GC API.Neil Schemenauer2001-08-291-22/+19
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* Improve the error message issued when an unbound method is called withGuido van Rossum2001-08-241-3/+49
| | | | | | an inappropriate first argument. Now that there are more ways for this to fail, make sure to report the name of the class of the expected instance and of the actual instance.
* repr's converted to using PyString_FromFormat() instead of sprintf'ingBarry Warsaw2001-08-241-19/+14
| | | | | | into a hardcoded char* buffer. Closes patch #454743.
* Fix core dump in repr() of instancemethod whose class==NULL.Guido van Rossum2001-08-171-7/+11
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* instance_getattr2(): rewritten to remove unnecessary stuff andGuido van Rossum2001-08-171-24/+13
| | | | | | | streamlined a bit. instancemethod_descr_get(): don't bind an unbound method of a class that's not a base class of the argument class.
* Instance methods: allow a NULL value for im_class.Guido van Rossum2001-08-171-2/+2
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* classobject.c:instancemethod_descr_get(): when a bound method isGuido van Rossum2001-08-161-0/+5
| | | | | | | assigned to a class variable and then accessed via an instance, it should not be rebound. test_descr.py:methods(): test for the condition above.
* PyMethod_Type: add a tp_descr_get slot function to ensure properGuido van Rossum2001-08-151-1/+19
| | | | binding of unbound methods.
* Implement PEP 238 in its (almost) full glory.Guido van Rossum2001-08-081-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | This introduces: - A new operator // that means floor division (the kind of division where 1/2 is 0). - The "future division" statement ("from __future__ import division) which changes the meaning of the / operator to implement "true division" (where 1/2 is 0.5). - New overloadable operators __truediv__ and __floordiv__. - New slots in the PyNumberMethods struct for true and floor division, new abstract APIs for them, new opcodes, and so on. I emphasize that without the future division statement, the semantics of / will remain unchanged until Python 3.0. Not yet implemented are warnings (default off) when / is used with int or long arguments. This has been on display since 7/31 as SF patch #443474. Flames to /dev/null.
* Fix the test_weakref.py failure. Introduced by resolving "a conflict"Tim Peters2001-08-021-7/+0
| | | | (which didn't actually exist!) incorrectly.
* Merge of descr-branch back into trunk.Tim Peters2001-08-021-74/+161
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* init_name_op(): add (void) to the argument list to make it a validGuido van Rossum2001-05-221-1/+1
| | | | prototype, for gcc -Wstrict-prototypes.
* Variant of SF patch 423181Jeremy Hylton2001-05-111-21/+51
| | | | | | | For rich comparisons, use instance_getattr2() when possible to avoid the expense of setting an AttributeError. Also intern the name_op[] table and use the interned strings rather than creating a new string and interning it each time through.
* Reimplement PySequence_Contains() and instance_contains(), so they workTim Peters2001-05-051-37/+30
| | | | | | | | | safely together and don't duplicate logic (the common logic was factored out into new private API function _PySequence_IterContains()). Visible change: some_complex_number in some_instance no longer blows up if some_instance has __getitem__ but neither __contains__ nor __iter__. test_iter changed to ensure that remains true.
* Since Py_TPFLAGS_HAVE_WEAKREFS is set in Py_TPFLAGS_DEFAULT, it does notFred Drake2001-05-031-1/+1
| | | | | | | need to be specified in the type structures independently. The flag exists only for binary compatibility. This is a "source cleanliness" issue and introduces no behavioral changes.
* Well darnit! The innocuous fix I made to PyObject_Print() causedGuido van Rossum2001-04-301-1/+20
| | | | printing of instances not to look for __str__(). Fix this.
* Mondo changes to the iterator stuff, without changing how Python codeGuido van Rossum2001-04-231-2/+38
| | | | | | | | | | | | | | | | | | | | | | | | sees it (test_iter.py is unchanged). - Added a tp_iternext slot, which calls the iterator's next() method; this is much faster for built-in iterators over built-in types such as lists and dicts, speeding up pybench's ForLoop with about 25% compared to Python 2.1. (Now there's a good argument for iterators. ;-) - Renamed the built-in sequence iterator SeqIter, affecting the C API functions for it. (This frees up the PyIter prefix for generic iterator operations.) - Added PyIter_Check(obj), which checks that obj's type has a tp_iternext slot and that the proper feature flag is set. - Added PyIter_Next(obj) which calls the tp_iternext slot. It has a somewhat complex return condition due to the need for speed: when it returns NULL, it may not have set an exception condition, meaning the iterator is exhausted; when the exception StopIteration is set (or a derived exception class), it means the same thing; any other exception means some other error occurred.
* Iterators phase 1. This comprises:Guido van Rossum2001-04-201-2/+29
| | | | | | | | | | | | | | | | | | | | | | new slot tp_iter in type object, plus new flag Py_TPFLAGS_HAVE_ITER new C API PyObject_GetIter(), calls tp_iter new builtin iter(), with two forms: iter(obj), and iter(function, sentinel) new internal object types iterobject and calliterobject new exception StopIteration new opcodes for "for" loops, GET_ITER and FOR_ITER (also supported by dis.py) new magic number for .pyc files new special method for instances: __iter__() returns an iterator iteration over dictionaries: "for x in dict" iterates over the keys iteration over files: "for x in file" iterates over lines TODO: documentation test suite decide whether to use a different way to spell iter(function, sentinal) decide whether "for key in dict" is a good idea use iterators in map/filter/reduce, min/max, and elsewhere (in/not in?) speed tuning (make next() a slot tp_next???)
* Add support for weak references to the function and method types.Fred Drake2001-03-231-1/+6
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