1 files changed, 6 insertions, 2 deletions
diff --git a/gnuradio-runtime/include/gnuradio/pycallback_object.h b/gnuradio-runtime/include/gnuradio/pycallback_object.h
index 2af94c167e..80281db1e2 100644
--- a/gnuradio-runtime/include/gnuradio/pycallback_object.h
+++ b/gnuradio-runtime/include/gnuradio/pycallback_object.h
@@ -12,6 +12,8 @@
 #include <pythread.h>
 #include <boost/format.hpp>
 
+#include <iostream>
+
 enum pyport_t { PYPORT_STRING, PYPORT_FLOAT };
 
 int pycallback_object_count = 500;
@@ -70,7 +72,9 @@ public:
     {
         myType rVal = d_deflt;
         if (d_callback == NULL) {
-            printf("WARNING: pycallback_object get() called without py callback set!\n");
+            std::cerr
+                << "WARNING: pycallback_object get() called without py callback set!"
+                << std::endl;
             return rVal;
         } else {
             // obtain  PyGIL
@@ -130,7 +134,7 @@ private:
      * something. */
     myType pyCast(PyObject* obj)
     {
-        printf("TYPE NOT IMPLEMENTED!\n");
+        std::cerr << "TYPE NOT IMPLEMENTED!" << std::endl;
         assert(0);
         // the following is to make compilers happy only.
         myType dummy;