Change ModuleValue param order and add defaults

jedi/inference/sys_path.py

@@ -156,7 +156,8 @@ def _get_paths_from_buildout_script(inference_state, buildout_script_path):
 
     from jedi.inference.value import ModuleValue
     module_context = ModuleValue(
-        inference_state, module_node, file_io,
+        inference_state, module_node,
+        file_io=file_io,
         string_names=None,
         code_lines=get_cached_code_lines(inference_state.grammar, buildout_script_path),
     ).as_context()