At the PythonLabs meeting someone mentioned it would make Jim really
happy if one could delete the __dict__ attribute of an instance. I
love to make Jim happy, so here goes...
- New-style objects now support deleting their __dict__. This is for
all intents and purposes equivalent to assigning a brand new empty
dictionary, but saves space if the object is not used further.
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 16591cf..14a7e86 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -812,13 +812,13 @@
"This object has no __dict__");
return -1;
}
- if (value == NULL || !PyDict_Check(value)) {
+ if (value != NULL && !PyDict_Check(value)) {
PyErr_SetString(PyExc_TypeError,
"__dict__ must be set to a dictionary");
return -1;
}
dict = *dictptr;
- Py_INCREF(value);
+ Py_XINCREF(value);
*dictptr = value;
Py_XDECREF(dict);
return 0;