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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _bash_completion(self):
 """Prints all of the commands and options for bash-completion."""

        commands = set()
        options = set()
        for option, _action in self.parser._option_string_actions.items():
            options.add(option)
        for _name, _command in self.command_manager:
            commands.add(_name)
            cmd_factory = _command.load()
            cmd = cmd_factory(self, None)
            cmd_parser = cmd.get_parser('')
            for option, _action in cmd_parser._option_string_actions.items():
                options.add(option)
        print(' '.join(commands | options))