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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 add_job(self, data, persist=True):
        '''
        Adds a new job to the scheduler. The format is the same as required in
        the configuration file. See the docs on how YAML is interpreted into
        python data-structures to make sure, you pass correct dictionaries.
        '''

        # we don't do any checking here besides making sure its a dict.
        # eval() already does for us and raises errors accordingly
        if not isinstance(data, dict):
            raise ValueError('Scheduled jobs have to be of type dict.')
        if not len(data) == 1:
            raise ValueError('You can only schedule one new job at a time.')

        # if enabled is not included in the job,
        # assume job is enabled.
        for job in data:
            if 'enabled' not in data[job]:
                data[job]['enabled'] = True

        new_job = next(six.iterkeys(data))

        if new_job in self._get_schedule(include_opts=False):
            log.warning("Cannot update job %s, it's in the pillar!", new_job)

        elif new_job in self.opts['schedule']:
            log.info('Updating job settings for scheduled job: %s', new_job)
            self.opts['schedule'].update(data)

        else:
            log.info('Added new job %s to scheduler', new_job)
            self.opts['schedule'].update(data)

        # Fire the complete event back along with updated list of schedule
        evt = salt.utils.event.get_event('minion', opts=self.opts, listen=False)
        evt.fire_event({'complete': True,
                        'schedule': self._get_schedule()},
                       tag='/salt/minion/minion_schedule_add_complete')

        if persist:
            self.persist()