elif sys.argv[2] == 'student':
			if len(sys.argv) == 6:
				student = Student.insert(batch=sys.argv[3], age=sys.argv[4], last_name='', first_name=sys.argv[5]).execute()
			else:		
				student = Student.insert(batch=sys.argv[3], age=sys.argv[4], last_name=sys.argv[5], first_name=sys.argv[6]).execute()
			print "New student: " + str(Student.select().where(Student.id==student).get())
		elif sys.argv[2] == 'exercise':
			exercise = Exercise.insert(student=sys.argv[3], subject=sys.argv[4],note=sys.argv[5]).execute()
			print "New exercise: " + str(Exercise.select().where(Exercise.id==exercise).get())
	elif sys.argv[1] == 'delete':
		if sys.argv[2] == 'school':
			if School.select().where(School.id==sys.argv[3]).count() == 0:
				print "Nothing to delete"
			else:
				print_school = "Delete: " + str(School.select().where(School.id==sys.argv[3]).get())	
				school = School.delete().where(School.id == sys.argv[3]).execute()
				print print_school
		elif sys.argv[2] == 'student':
			if Student.select().where(Student.id==sys.argv[3]).count() == 0:
				print "Nothing to delete"
			else:
				print_student = "Delete: " + str(Student.select().where(Student.id==sys.argv[3]).get())	
				student = Student.delete().where(Student.id == sys.argv[3]).execute()
				print print_student
		elif sys.argv[2] == 'batch':
			if Batch.select().where(Batch.id==sys.argv[3]).count() == 0:
				print "Nothing to delete"
			else:
				print_batch = "Delete: " + str(Batch.select().where(Batch.id==sys.argv[3]).get())	
				batch = Batch.delete().where(Batch.id == sys.argv[3]).execute()
				print print_batch