python oop

 

1、  python中的__str__()函数

2、python 何时单用__hash__或__eq__何时一起用     https://blog.csdn.net/sinat_38068807/article/details/86519944#%EF%BC%881%EF%BC%89%E4%BB%A5%E4%B8%8B%E4%BB%A3%E7%A0%81%E5%8F%AA%E7%94%A8%E5%88%B0%E4%BA%86__eq__%EF%BC%8C%E5%9B%A0%E4%B8%BA%E6%B2%A1%E6%B6%89%E5%8F%8A%E4%B8%80%E4%B8%AD%E7%9A%84%E8%AF%B4%E6%98%8E%EF%BC%8C%E8%BF%99%E9%87%8C%E6%A0%B9%E6%9C%AC%E6%B2%A1%E6%B6%89%E5%8F%8Ahash