def omitfrom_jobs(self):
    'Returns a generator of jobs specified by omitfromjobs.'
    return (job for job in self.jobs if self.in_omitfrom(job))
Returns a generator of jobs specified by omitfromjobs.
def omitfrom_jobs(self):
    
    return (job for job in self.jobs if self.in_omitfrom(job))