ENH: Show the incorrect type in the fortran error message

I just got this error while hacking some scipy internals, and had nowhere near enough information to debug it.

This is a little closer to useful.

1 files changed, 4 insertions, 3 deletions

diff --git a/numpy/f2py/src/fortranobject.c b/numpy/f2py/src/fortranobject.c
index 8aa55555d..eb1050dd7 100644
--- a/numpy/f2py/src/fortranobject.c
+++ b/numpy/f2py/src/fortranobject.c
@@ -839,9 +839,10 @@ PyArrayObject* array_from_pyobj(const int type_num,
     if ((intent & F2PY_INTENT_INOUT) ||
             (intent & F2PY_INTENT_INPLACE) ||
             (intent & F2PY_INTENT_CACHE)) {
-        PyErr_SetString(PyExc_TypeError,
-                        "failed to initialize intent(inout|inplace|cache) "
-                        "array, input not an array");
+        PyErr_Format(PyExc_TypeError,
+                     "failed to initialize intent(inout|inplace|cache) "
+                     "array, input '%s' object is not an array",
+                     Py_TYPE(obj)->tp_name);
         return NULL;
     }