bpo-29695: Deprecated using bad named keyword arguments in builtings: (#486)

int(), bool(), float(), list() and tuple().  Specify the value as a
positional argument instead.

1 files changed, 6 insertions, 0 deletions

diff --git a/Objects/listobject.c b/Objects/listobject.c
index edd4a15068..59f68819d4 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -2297,6 +2297,12 @@ list_init(PyListObject *self, PyObject *args, PyObject *kw)
 
     if (!PyArg_ParseTupleAndKeywords(args, kw, "|O:list", kwlist, &arg))
         return -1;
+    if (arg != NULL && PyTuple_GET_SIZE(args) == 0) {
+        if (PyErr_Warn(PyExc_DeprecationWarning,
+                "Using 'sequence' as a keyword argument is deprecated; "
+                "specify the value as a positional argument instead") < 0)
+            return -1;
+    }
 
     /* Verify list invariants established by PyType_GenericAlloc() */
     assert(0 <= Py_SIZE(self));