Merged revisions 58886-58929 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r58892 | guido.van.rossum | 2007-11-06 15:32:56 -0800 (Tue, 06 Nov 2007) | 2 lines

  Add missing "return NULL" in overflow check in PyObject_Repr().
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  r58893 | raymond.hettinger | 2007-11-06 17:13:09 -0800 (Tue, 06 Nov 2007) | 1 line

  Fix marshal's incorrect handling of subclasses of builtin types (backport candidate).
........
  r58895 | raymond.hettinger | 2007-11-06 18:26:17 -0800 (Tue, 06 Nov 2007) | 1 line

  Optimize dict.fromkeys() with dict inputs.  Useful for resetting bag/muliset counts for example.
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  r58896 | raymond.hettinger | 2007-11-06 18:45:46 -0800 (Tue, 06 Nov 2007) | 1 line

  Add build option for faster loop execution.
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  r58900 | nick.coghlan | 2007-11-07 03:57:51 -0800 (Wed, 07 Nov 2007) | 1 line

  Add missing NEWS entry
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  r58905 | christian.heimes | 2007-11-07 09:50:54 -0800 (Wed, 07 Nov 2007) | 1 line

  Backported fix for bug #1392 from py3k branch r58903.
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  r58906 | christian.heimes | 2007-11-07 10:30:22 -0800 (Wed, 07 Nov 2007) | 1 line

  Backport of Guido's review of my patch.
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  r58908 | raymond.hettinger | 2007-11-07 18:52:43 -0800 (Wed, 07 Nov 2007) | 1 line

  Add set.isdisjoint()
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  r58915 | raymond.hettinger | 2007-11-08 10:47:51 -0800 (Thu, 08 Nov 2007) | 1 line

  Reposition the decref (spotted by eagle-eye norwitz).
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  r58920 | georg.brandl | 2007-11-09 04:31:43 -0800 (Fri, 09 Nov 2007) | 2 lines

  Fix seealso link to sets docs. Do not merge to Py3k.
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  r58921 | georg.brandl | 2007-11-09 05:08:48 -0800 (Fri, 09 Nov 2007) | 2 lines

  Fix misleading example.
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  r58923 | georg.brandl | 2007-11-09 09:33:23 -0800 (Fri, 09 Nov 2007) | 3 lines

  Correct a comment about testing methods - nowadays most
  tests don't run directly on import.
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  r58924 | martin.v.loewis | 2007-11-09 14:56:30 -0800 (Fri, 09 Nov 2007) | 2 lines

  Add Amaury Forgeot d'Arc.
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  r58925 | raymond.hettinger | 2007-11-09 15:14:44 -0800 (Fri, 09 Nov 2007) | 1 line

  Optimize common case for dict.fromkeys().
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  r58927 | raymond.hettinger | 2007-11-09 17:54:03 -0800 (Fri, 09 Nov 2007) | 1 line

  Use a freelist to speed-up block allocation and deallocation in collections.deque().
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  r58929 | guido.van.rossum | 2007-11-10 14:12:24 -0800 (Sat, 10 Nov 2007) | 3 lines

  Issue 1416.  Add getter, setter, deleter methods to properties that can be
  used as decorators to create fully-populated properties.
........

4 files changed, 160 insertions, 10 deletions

diff --git a/Objects/descrobject.c b/Objects/descrobject.c
index 30ba461..a0fc217 100644
--- a/Objects/descrobject.c
+++ b/Objects/descrobject.c
@@ -1099,6 +1099,60 @@ static PyMemberDef property_members[] = {
 	{0}
 };
 
+PyDoc_STRVAR(getter_doc,
+	     "Descriptor to change the getter on a property.");
+
+PyObject *
+property_getter(PyObject *self, PyObject *getter)
+{
+	Py_XDECREF(((propertyobject *)self)->prop_get);
+	if (getter == Py_None)
+		getter = NULL;
+	Py_XINCREF(getter);
+	((propertyobject *)self)->prop_get = getter;
+	Py_INCREF(self);
+	return self;
+}
+
+PyDoc_STRVAR(setter_doc,
+	     "Descriptor to change the setter on a property.\n");
+
+PyObject *
+property_setter(PyObject *self, PyObject *setter)
+{
+	Py_XDECREF(((propertyobject *)self)->prop_set);
+	if (setter == Py_None)
+		setter = NULL;
+	Py_XINCREF(setter);
+	((propertyobject *)self)->prop_set = setter;
+	Py_INCREF(self);
+	return self;
+}
+
+PyDoc_STRVAR(deleter_doc,
+	     "Descriptor to change the deleter on a property.");
+
+PyObject *
+property_deleter(PyObject *self, PyObject *deleter)
+{
+	Py_XDECREF(((propertyobject *)self)->prop_del);
+	if (deleter == Py_None)
+		deleter = NULL;
+	Py_XINCREF(deleter);
+	((propertyobject *)self)->prop_del = deleter;
+	Py_INCREF(self);
+	return self;
+}
+
+
+
+static PyMethodDef property_methods[] = {
+	{"getter", property_getter, METH_O, getter_doc},
+	{"setter", property_setter, METH_O, setter_doc},
+	{"deleter", property_deleter, METH_O, deleter_doc},
+	{0}
+};
+
 
 static void
 property_dealloc(PyObject *self)
@@ -1251,7 +1305,7 @@ PyTypeObject PyProperty_Type = {
 	0,					/* tp_weaklistoffset */
 	0,					/* tp_iter */
 	0,					/* tp_iternext */
-	0,					/* tp_methods */
+	property_methods,			/* tp_methods */
 	property_members,			/* tp_members */
 	0,					/* tp_getset */
 	0,					/* tp_base */
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index 4230125..7bff7d8 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -1175,6 +1175,25 @@ dict_fromkeys(PyObject *cls, PyObject *args)
 	if (d == NULL)
 		return NULL;
 
+	if (PyDict_CheckExact(d) && PyDict_CheckExact(seq)) {
+		PyDictObject *mp = (PyDictObject *)d;
+		PyObject *oldvalue;
+		Py_ssize_t pos = 0;
+		PyObject *key;
+		long hash;
+
+		if (dictresize(mp, PySet_GET_SIZE(seq)))
+			return NULL;
+
+		while (_PyDict_Next(seq, &pos, &key, &oldvalue, &hash)) {
+			Py_INCREF(key);
+			Py_INCREF(value);
+			if (insertdict(mp, key, hash, value))
+				return NULL;
+		}
+		return d;
+	}
+
 	if (PyDict_CheckExact(d) && PyAnySet_CheckExact(seq)) {
 		PyDictObject *mp = (PyDictObject *)d;
 		Py_ssize_t pos = 0;
@@ -1199,19 +1218,24 @@ dict_fromkeys(PyObject *cls, PyObject *args)
 		return NULL;
 	}
 
-	for (;;) {
-		key = PyIter_Next(it);
-		if (key == NULL) {
-			if (PyErr_Occurred())
+	if (PyDict_CheckExact(d)) {
+		while ((key = PyIter_Next(it)) != NULL) {
+			status = PyDict_SetItem(d, key, value);
+			Py_DECREF(key);
+			if (status < 0)
+				goto Fail;
+		}
+	} else {
+		while ((key = PyIter_Next(it)) != NULL) {
+			status = PyObject_SetItem(d, key, value);
+			Py_DECREF(key);
+			if (status < 0)
 				goto Fail;
-			break;
 		}
-		status = PyObject_SetItem(d, key, value);
-		Py_DECREF(key);
-		if (status < 0)
-			goto Fail;
 	}
 
+	if (PyErr_Occurred())
+		goto Fail;
 	Py_DECREF(it);
 	return d;
 
diff --git a/Objects/setobject.c b/Objects/setobject.c
index ba7d2c4..f6ea441 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -1314,6 +1314,73 @@ set_iand(PySetObject *so, PyObject *other)
 	return (PyObject *)so;
 }
 
+static PyObject *
+set_isdisjoint(PySetObject *so, PyObject *other)
+{
+	PyObject *key, *it, *tmp;
+
+	if ((PyObject *)so == other) {
+		if (PySet_GET_SIZE(so) == 0)
+			Py_RETURN_TRUE;
+		else
+			Py_RETURN_FALSE;
+	}
+
+	if (PyAnySet_CheckExact(other)) {		
+		Py_ssize_t pos = 0;
+		setentry *entry;
+
+		if (PySet_GET_SIZE(other) > PySet_GET_SIZE(so)) {
+			tmp = (PyObject *)so;
+			so = (PySetObject *)other;
+			other = tmp;
+		}
+		while (set_next((PySetObject *)other, &pos, &entry)) {
+			int rv = set_contains_entry(so, entry);
+			if (rv == -1)
+				return NULL;
+			if (rv)
+				Py_RETURN_FALSE;
+		}
+		Py_RETURN_TRUE;
+	}
+
+	it = PyObject_GetIter(other);
+	if (it == NULL)
+		return NULL;
+
+	while ((key = PyIter_Next(it)) != NULL) {
+		int rv;
+		setentry entry;
+		long hash = PyObject_Hash(key);
+
+		if (hash == -1) {
+			Py_DECREF(key);
+			Py_DECREF(it);
+			return NULL;
+		}
+		entry.hash = hash;
+		entry.key = key;
+		rv = set_contains_entry(so, &entry);
+		Py_DECREF(key);
+		if (rv == -1) {
+			Py_DECREF(it);
+			return NULL;
+		}
+		if (rv) {
+			Py_DECREF(it);
+			Py_RETURN_FALSE;
+		}
+	}
+	Py_DECREF(it);
+	if (PyErr_Occurred())
+		return NULL;
+	Py_RETURN_TRUE;
+}
+
+PyDoc_STRVAR(isdisjoint_doc,
+"Return True if two sets have a null intersection.");
+
 static int
 set_difference_update_internal(PySetObject *so, PyObject *other)
 {
@@ -1839,6 +1906,8 @@ static PyMethodDef set_methods[] = {
 	 intersection_doc},
 	{"intersection_update",(PyCFunction)set_intersection_update,	METH_O,
 	 intersection_update_doc},
+	{"isdisjoint",	(PyCFunction)set_isdisjoint,	METH_O,
+	 isdisjoint_doc},
 	{"issubset",	(PyCFunction)set_issubset,	METH_O,
 	 issubset_doc},
 	{"issuperset",	(PyCFunction)set_issuperset,	METH_O,
@@ -1960,6 +2029,8 @@ static PyMethodDef frozenset_methods[] = {
 	 difference_doc},
 	{"intersection",(PyCFunction)set_intersection,	METH_O,
 	 intersection_doc},
+	{"isdisjoint",	(PyCFunction)set_isdisjoint,	METH_O,
+	 isdisjoint_doc},
 	{"issubset",	(PyCFunction)set_issubset,	METH_O,
 	 issubset_doc},
 	{"issuperset",	(PyCFunction)set_issuperset,	METH_O,
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index 8761477..2e729ea 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -611,6 +611,7 @@ PyString_Repr(PyObject *obj, int smartquotes)
 	if (newsize > PY_SSIZE_T_MAX || (newsize-3) / 4 != length) {
 		PyErr_SetString(PyExc_OverflowError,
 			"bytes object is too large to make repr");
+                return NULL;
 	}
 	v = PyUnicode_FromUnicode(NULL, newsize);
 	if (v == NULL) {