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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 extract_submittable_jobs(waiting):
 """Obtain a list of jobs that are able to be submitted from the passed list of pending jobs - waiting List of Job objects """

    submittable = set()            # Holds jobs that are able to be submitted
    # Loop over each job, and check all the subjobs in that job's dependency
    # list.  If there are any, and all of these have been submitted, then
    # append the job to the list of submittable jobs.
    for job in waiting:
        unsatisfied = sum([(subjob.submitted is False) for subjob in
                           job.dependencies])
        if unsatisfied == 0:
            submittable.add(job)
    return list(submittable)