[Python-checkins] r60841 - in python/trunk: Lib/test/test_descr.py Misc/NEWS Objects/descrobject.c
amaury.forgeotdarc
python-checkins at python.org
Fri Feb 15 22:22:46 CET 2008
Author: amaury.forgeotdarc
Date: Fri Feb 15 22:22:45 2008
New Revision: 60841
Modified:
python/trunk/Lib/test/test_descr.py
python/trunk/Misc/NEWS
python/trunk/Objects/descrobject.c
Log:
Issue #2115: __slot__ attributes setting was 10x slower.
Also correct a possible crash using ABCs.
This change is exactly the same as an optimisation
done 5 years ago, but on slot *access*:
http://svn.python.org/view?view=rev&rev=28297
Modified: python/trunk/Lib/test/test_descr.py
==============================================================================
--- python/trunk/Lib/test/test_descr.py (original)
+++ python/trunk/Lib/test/test_descr.py Fri Feb 15 22:22:45 2008
@@ -1182,6 +1182,24 @@
a.foo = 42
self.assertEqual(a.__dict__, {"foo": 42})
+ def test_slots_descriptor(self):
+ # Issue2115: slot descriptors did not correctly check
+ # the type of the given object
+ import abc
+ class MyABC:
+ __metaclass__ = abc.ABCMeta
+ __slots__ = "a"
+
+ class Unrelated(object):
+ pass
+ MyABC.register(Unrelated)
+
+ u = Unrelated()
+ self.assert_(isinstance(u, MyABC))
+
+ # This used to crash
+ self.assertRaises(TypeError, MyABC.a.__set__, u, 3)
+
def test_dynamics(self):
# Testing class attribute propagation...
class D(object):
Modified: python/trunk/Misc/NEWS
==============================================================================
--- python/trunk/Misc/NEWS (original)
+++ python/trunk/Misc/NEWS Fri Feb 15 22:22:45 2008
@@ -12,6 +12,10 @@
Core and builtins
-----------------
+- Issue #2115: Important speedup in setting __slot__ attributes. Also
+ prevent a possible crash: an Abstract Base Class would try to access a slot
+ on a registered virtual subclass.
+
- Fixed repr() and str() of complex numbers with infinity or nan as real or
imaginary part.
Modified: python/trunk/Objects/descrobject.c
==============================================================================
--- python/trunk/Objects/descrobject.c (original)
+++ python/trunk/Objects/descrobject.c Fri Feb 15 22:22:45 2008
@@ -166,7 +166,7 @@
int *pres)
{
assert(obj != NULL);
- if (!PyObject_IsInstance(obj, (PyObject *)(descr->d_type))) {
+ if (!PyObject_TypeCheck(obj, descr->d_type)) {
PyErr_Format(PyExc_TypeError,
"descriptor '%.200s' for '%.100s' objects "
"doesn't apply to '%.100s' object",
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