Fix a problem with callback proxies with zero or one parameters.

bindings/python/ns3modulegen_core_customizations.py

@@ -145,7 +145,7 @@ class CallbackImplProxyMethod(typehandlers.ReverseWrapperBase):
 
     def generate_python_call(self):
         """code to call the python method"""
-        build_params = self.build_params.get_parameters()
+        build_params = self.build_params.get_parameters(force_tuple_creation=True)
         if build_params[0][0] == '"':
             build_params[0] = '(char *) ' + build_params[0]
         args = self.before_call.declare_variable('PyObject*', 'args')

bindings/python/wscript

@@ -21,7 +21,7 @@ else:
     os.environ['PYTHONPATH'] = LOCAL_PYBINDGEN_PATH
 
 ## https://launchpad.net/pybindgen/
-REQUIRED_PYBINDGEN_VERSION = (0, 8, 0, 475)
+REQUIRED_PYBINDGEN_VERSION = (0, 8, 0, 479)
 REQUIRED_PYGCCXML_VERSION = (0, 9, 5)