<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def parse(self):
 """Parse command line arguments and options. Returns: Dictionary containing all given command line arguments and options. """

        (options, args) = self.parser.parse_args()
        self._set_attributes(args, options)
        return self._create_dictionary()