Python 3: use explicit relative import

diff --git a/python/lib/generator.py b/python/lib/generator.py
index 195c2ef..7d95945 100755 (executable)
--- a/python/lib/generator.py
+++ b/python/lib/generator.py
@@ -3,7 +3,7 @@
 """ This file generates a c file from a list of cpp prototypes. """
 
 import os, sys, shutil
-from gen_pyobject import write_msg, gen_new_init, gen_do, gen_members, gen_methods, gen_finish
+from .gen_pyobject import write_msg, gen_new_init, gen_do, gen_members, gen_methods, gen_finish
 
 def get_cpp_objects():