def insert_item(argv):
    '''Takes the system arguments as parameter and then inserts the item.

    Keyword arguments:
    argv -- An array of command line arguments passed to the program.
    '''
    if argv[2] == "school":
        school = School.create(name=argv[3])
        print "New school: " + str(School.get(School.name == argv[3]))
    elif argv[2] == "batch":
        batch = Batch.create(school=argv[3], name=argv[4])
        print "New batch: " + str(Batch.get(Batch.name == argv[4]))
    elif argv[2] == "student":
        print "New student:",
        if len(argv) > 6:
            student = Student.create(batch=argv[3],
                                     age=argv[4],
                                     last_name=argv[5],
                                     first_name=argv[6])
            print str(Student.get(Student.age == argv[4] and
                                  Student.last_name == argv[5] and
                                  Student.first_name == argv[6]))
        else:
            student = Student.create(batch=argv[3],
                                     age=argv[4],
                                     last_name=argv[5])
            print str(Student.get(Student.age == argv[4] and
                                  Student.last_name == argv[5]))
    elif argv[2] == "exercise":
        exercise = Exercise.create(student=argv[3],
                                   subject=argv[4],
                                   note=argv[5])
        print "New Exercise: " + str(exercise)