https://blog.margrop.net/en/tag/oop/ Recent content in Oop on Margrop Blog Hugo -- gohugo.io en-US Thu, 04 Mar 2021 22:23:55 +0800 https://blog.margrop.net/en/post/python3-oop/ Thu, 04 Mar 2021 22:23:55 +0800 https://blog.margrop.net/en/post/python3-oop/ Object-oriented programming Access restrictions Private variables start with __ class Student(object): def __init__(self, name, score): self.name = name self.score = score def print_score(self): print('%s: %s' % (self.name, self.score)) Inheritance and polymorphism Inheritance: Dog inherits from Animal class Student(object): def __init__(self, name, score): self.__name = name self.__score = score def print_score(self): print('%s: %s' % (self.__name, self.__score)) Get object information Basic object types Object type of a function or class Type checking Reflection: use dir() to get all properties and methods of an object Reflection: getattr(), setattr(), and hasattr() Interfaces and duck typing class Animal(object): def run(self): print('Animal is running.