function return working with one return value

test/testprogram.py

@@ -0,0 +1,16 @@
+import orchpy.unison as unison
+import orchpy.services as services
+import orchpy.worker as worker
+
+@worker.distributed([str], [str])
+def print_string(string):
+  print "called print_string with", string
+  return string
+
+if __name__ == '__main__':
+  worker.global_worker.connect("127.0.0.1:22221", "127.0.0.1:40000", "127.0.0.1:22222")
+
+  worker.global_worker.register_function("hello_world", print_string, 1)
+  worker.global_worker.start_worker_service()
+
+  worker.global_worker.main_loop()