Issue #25447: Copying the lru_cache() wrapper object now always works,
independedly from the type of the wrapped object (by returning the original
object unchanged).
diff --git a/Modules/_functoolsmodule.c b/Modules/_functoolsmodule.c
index fadc0a9..035d3d9 100644
--- a/Modules/_functoolsmodule.c
+++ b/Modules/_functoolsmodule.c
@@ -1053,6 +1053,20 @@
return PyObject_GetAttrString(self, "__qualname__");
}
+static PyObject *
+lru_cache_copy(PyObject *self, PyObject *unused)
+{
+ Py_INCREF(self);
+ return self;
+}
+
+static PyObject *
+lru_cache_deepcopy(PyObject *self, PyObject *unused)
+{
+ Py_INCREF(self);
+ return self;
+}
+
static int
lru_cache_tp_traverse(lru_cache_object *self, visitproc visit, void *arg)
{
@@ -1104,6 +1118,8 @@
{"cache_info", (PyCFunction)lru_cache_cache_info, METH_NOARGS},
{"cache_clear", (PyCFunction)lru_cache_cache_clear, METH_NOARGS},
{"__reduce__", (PyCFunction)lru_cache_reduce, METH_NOARGS},
+ {"__copy__", (PyCFunction)lru_cache_copy, METH_VARARGS},
+ {"__deepcopy__", (PyCFunction)lru_cache_deepcopy, METH_VARARGS},
{NULL}
};