Change ModuleValue param order and add defaults

jedi/api/__init__.py

@@ -167,7 +167,8 @@ class Script(object):
             names = ('__main__',)
 
         module = ModuleValue(
-            self._inference_state, self._module_node, file_io,
+            self._inference_state, self._module_node,
+            file_io=file_io,
             string_names=names,
             code_lines=self._code_lines,
             is_package=is_package,

jedi/api/completion.py

@@ -476,8 +476,6 @@ class Completion:
         module_value = ModuleValue(
             self._inference_state,
             module_node,
-            file_io=None,
-            string_names=None,
             code_lines=code_lines,
         )
         module_value.parent_context = self._module_context

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()

jedi/inference/value/module.py

@@ -176,8 +176,8 @@ class ModuleMixin(SubModuleDictMixin):
 class ModuleValue(ModuleMixin, TreeValue):
     api_type = u'module'
 
-    def __init__(self, inference_state, module_node, file_io, string_names,
-                 code_lines, is_package=False):
+    def __init__(self, inference_state, module_node, code_lines, file_io=None,
+                 string_names=None, is_package=False):
         super(ModuleValue, self).__init__(
             inference_state,
             parent_context=None,

jedi/plugins/stdlib.py

@@ -467,8 +467,6 @@ def collections_namedtuple(value, arguments, callback):
     generated_class = next(module.iter_classdefs())
     parent_context = ModuleValue(
         inference_state, module,
-        file_io=None,
-        string_names=None,
         code_lines=parso.split_lines(code, keepends=True),
     ).as_context()