improved error message

Author: dg-pb

Diff for: Lib/functools.py

@@ -327,7 +327,7 @@ def _partial_new(cls, func, /, *args, **keywords):
     if args and args[-1] is Placeholder:
         raise TypeError("trailing Placeholders are not allowed")
     if keywords and Placeholder in keywords.values():
-        raise TypeError("keyword Placeholders are not allowed")
+        raise TypeError("Placeholder cannot be passed as a keyword argument")
     if isinstance(func, base_cls):
         pto_phcount = func._phcount
         tot_args = func.args

Diff for: Modules/_functoolsmodule.c

@@ -297,7 +297,7 @@ partial_new(PyTypeObject *type, PyObject *args, PyObject *kw)
             if (val == phold) {
                 Py_DECREF(pto);
                 PyErr_SetString(PyExc_TypeError,
-                                "keyword Placeholders are not allowed");
+                                "Placeholder cannot be passed as a keyword argument");
                 return NULL;
             }
             if (PyDict_SetItem(pto->kw, key, val) < 0) {