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classobject.c:instancemethod_descr_get(): when a bound method is

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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.
This commit is contained in:
Guido van Rossum 2001-08-16 20:41:56 +00:00
parent 2907fe6ce7
commit 501c7c7d0e
2 changed files with 6 additions and 1 deletions
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2
Lib/test/test_descr.py
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@ -862,7 +862,7 @@ def methods():
d2 = D(2)
verify(d2.foo() == 2)
verify(d2.boo() == 2)
verify(d2.goo() == 2)
verify(d2.goo() == 1)
def specials():
# Test operators like __hash__ for which a built-in default exists

5
Objects/classobject.c
View File

@ -2196,6 +2196,11 @@ instancemethod_call(PyObject *func, PyObject *arg, PyObject *kw)
static PyObject *
instancemethod_descr_get(PyObject *meth, PyObject *obj, PyObject *type)
{
if (PyMethod_GET_SELF(meth) != NULL) {
/* Don't rebind an already bound method */
Py_INCREF(meth);
return meth;
}
if (obj == Py_None)
obj = NULL;
return PyMethod_New(PyMethod_GET_FUNCTION(meth), obj, type);