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_more_comments(self, win, data):

        n_rows, n_cols = win.getmaxyx()
        n_cols -= 1

        self.term.add_line(win, '{body}'.format(**data), 0, 1)
        self.term.add_line(
            win, ' [{count}]'.format(**data), attr=curses.A_BOLD)

        attr = Color.get_level(data['level'])
        self.term.addch(win, 0, 0, self.term.vline, attr)

        return attr | self.term.vline