Misc changes found when debugging an unrelated problem.

- (pywrap_tfe.i) Improve error message for better debugging TFE_Py_Execute failures.
- (pywrap_tfe_src.cc) Accept _value of None
- (base.i) Remove unnecessary temporary

PiperOrigin-RevId: 197073571

1 files changed, 6 insertions, 3 deletions

diff --git a/tensorflow/python/pywrap_tfe.i b/tensorflow/python/pywrap_tfe.i
index fde3223e96..5f1fafb9dc 100644
--- a/tensorflow/python/pywrap_tfe.i
+++ b/tensorflow/python/pywrap_tfe.i
@@ -153,9 +153,12 @@ limitations under the License.
       if (EagerTensor_CheckExact(elem)) {
         (*$1)[i] = EagerTensor_Handle(elem);
       } else {
-        SWIG_exception_fail(SWIG_TypeError,
-                            "provided list of inputs contains objects other "
-                            "than 'EagerTensor'");
+        SWIG_exception_fail(
+            SWIG_TypeError,
+            tensorflow::strings::StrCat(
+                "provided list of inputs contains objects other "
+                "than 'EagerTensor'. Item ",
+                i, " is ", elem->ob_type->tp_name).c_str());
       }
     }
   }