diff options
Diffstat (limited to 'Objects')
| -rw-r--r-- | Objects/dictobject.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/Objects/dictobject.c b/Objects/dictobject.c index f5e5320..2254762 100644 --- a/Objects/dictobject.c +++ b/Objects/dictobject.c @@ -882,8 +882,22 @@ dict_subscript(dictobject *mp, register PyObject *key) return NULL; } v = (mp->ma_lookup)(mp, key, hash) -> me_value; - if (v == NULL) + if (v == NULL) { + if (!PyDict_CheckExact(mp)) { + /* Look up __missing__ method if we're a subclass. */ + static PyObject *missing_str = NULL; + if (missing_str == NULL) + missing_str = + PyString_InternFromString("__missing__"); + PyObject *missing = _PyType_Lookup(mp->ob_type, + missing_str); + if (missing != NULL) + return PyObject_CallFunctionObjArgs(missing, + (PyObject *)mp, key, NULL); + } PyErr_SetObject(PyExc_KeyError, key); + return NULL; + } else Py_INCREF(v); return v; |