[Python 내용정리] 클래스 — 다중상속, 생성자 오버라이딩 | by INSEO LEE | Medium
https://medium.com/@dlstj1506/python-%ED%8C%8C%EC%9D%B4%EC%8D%AC-%ED%81%B4%EB%9E%98%EC%8A%A4-e6954dae63c0
https://medium.com/@dlstj1506/python-%ED%8C%8C%EC%9D%B4%EC%8D%AC-%ED%81%B4%EB%9E%98%EC%8A%A4-e6954dae63c0