Make TypeError messages contain type name instead of a repr.

The failure depends on the type, not on the value of an object.

This combines CPython's issues 26623 and 24641.

1 files changed, 3 insertions, 1 deletions

diff --git a/simplejson/_speedups.c b/simplejson/_speedups.c
index bfd053a..3d9e702 100644
--- a/simplejson/_speedups.c
+++ b/simplejson/_speedups.c
@@ -680,7 +680,9 @@ encoder_stringify_key(PyEncoderObject *s, PyObject *key)
         Py_INCREF(Py_None);
         return Py_None;
     }
-    PyErr_SetString(PyExc_TypeError, "keys must be a string");
+    PyErr_Format(PyExc_TypeError,
+                 "keys must be str, int, float, bool or None, "
+                 "not %.100s", key->ob_type->tp_name);
     return NULL;
 }