builtin_dir(): Treat classic classes like types. Use PyDict_Keys instead
of PyMapping_Keys because we know we have a real dict. Tolerate that
objects may have an attr named "__dict__" that's not a dict (Py_None
popped up during testing).
test_descr.py, test_dir(): Test the new classic-class behavior; beef up
the new-style class test similarly.
test_pyclbr.py, checkModule(): dir(C) is no longer a synonym for
C.__dict__.keys() when C is a classic class (looks like the same thing
that burned distutils! -- should it be *made* a synoym again? Then it
would be inconsistent with new-style class behavior.).
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index d5dc322..d3d32c9 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -440,9 +440,6 @@
PyObject *bases;
assert(PyDict_Check(dict));
- /* XXX Class objects fail the PyType_Check check. Don't
- XXX know of others. */
- /* assert(PyType_Check(aclass)); */
assert(aclass);
/* Merge in the type's dict (if any). */
@@ -490,7 +487,7 @@
PyObject *locals = PyEval_GetLocals();
if (locals == NULL)
goto error;
- result = PyMapping_Keys(locals);
+ result = PyDict_Keys(locals);
if (result == NULL)
goto error;
}
@@ -500,10 +497,13 @@
masterdict = PyObject_GetAttrString(arg, "__dict__");
if (masterdict == NULL)
goto error;
+ assert(PyDict_Check(masterdict));
}
- /* Elif some form of type, recurse. */
- else if (PyType_Check(arg)) {
+ /* Elif some form of type or class, grab its dict and its bases.
+ We deliberately don't suck up its __class__, as methods belonging
+ to the metaclass would probably be more confusing than helpful. */
+ else if (PyType_Check(arg) || PyClass_Check(arg)) {
masterdict = PyDict_New();
if (masterdict == NULL)
goto error;
@@ -514,28 +514,30 @@
/* Else look at its dict, and the attrs reachable from its class. */
else {
PyObject *itsclass;
- /* Create a dict to start with. */
+ /* Create a dict to start with. CAUTION: Not everything
+ responding to __dict__ returns a dict! */
masterdict = PyObject_GetAttrString(arg, "__dict__");
if (masterdict == NULL) {
PyErr_Clear();
masterdict = PyDict_New();
- if (masterdict == NULL)
- goto error;
+ }
+ else if (!PyDict_Check(masterdict)) {
+ Py_DECREF(masterdict);
+ masterdict = PyDict_New();
}
else {
/* The object may have returned a reference to its
dict, so copy it to avoid mutating it. */
PyObject *temp = PyDict_Copy(masterdict);
- if (temp == NULL)
- goto error;
Py_DECREF(masterdict);
masterdict = temp;
}
- /* Merge in attrs reachable from its class. */
+ if (masterdict == NULL)
+ goto error;
+
+ /* Merge in attrs reachable from its class.
+ CAUTION: Not all objects have a __class__ attr. */
itsclass = PyObject_GetAttrString(arg, "__class__");
- /* XXX Sometimes this is null! Like after "class C: pass",
- C.__class__ raises AttributeError. Don't know of other
- cases. */
if (itsclass == NULL)
PyErr_Clear();
else {
@@ -550,7 +552,7 @@
if (masterdict != NULL) {
/* The result comes from its keys. */
assert(result == NULL);
- result = PyMapping_Keys(masterdict);
+ result = PyDict_Keys(masterdict);
if (result == NULL)
goto error;
}
@@ -578,7 +580,8 @@
"\n"
"No argument: the names in the current scope.\n"
"Module object: the module attributes.\n"
-"Type object: its attributes, and recursively the attributes of its bases.\n"
+"Type or class object: its attributes, and recursively the attributes of\n"
+" its bases.\n"
"Otherwise: its attributes, its class's attributes, and recursively the\n"
" attributes of its class's base classes.";