def load(self, filename, create_if_missing=True):
        filename = Path(filename)
        if not filename.exists() and create_if_missing:
            self.load_pip_requirements()
            with filename.open("w") as f:
                f.write(yaml.dump(self.serialized, default_flow_style=False,
                                  encoding=None))
            self.filename = filename
            return self.save(filename)
        with filename.open() as f:
            for group, requirements in yaml.load(f.read()).items():
                for requirement in requirements:
                    self[group].add(Requirement.coerce(requirement))
        self.filename = filename
def draw(self, context):
        from rna_keymap_ui import draw_keymaps

        layout = self.layout

        #import time

        #start = time.time()

        userpref = context.user_preferences

        inputs = userpref.inputs

        split = layout.split(percentage=0.25)

        # Input settings
        self.draw_input_prefs(inputs, split)

        # Keymap Settings
        draw_keymaps(context, split)

        #print("runtime", time.time() - start)