How to create a class in python

How to create a class in python?

In python, we also use the keyword class to create a class, with the class name first capital letters, with or without parentheses;

Instantiating a class in Python does not require the keyword new (there is no such keyword), and the instantiation of a class is similar to a function call;

# coding: utf-8 # 创建一个类，类名称第一个字母大写,可以带括号也可以不带括号 class Student(): student_count = 0 def __init__(self, name, salary): self.name = name self.age = salary Student.student_count += 1 def display_count(self): print('Total student {}'.format(Student.student_count)) def display_student(self): print('Name: {}, age: {}'.format(self.name,self.age)) def get_class(self): if self.age >= 7 and self.age < 8: return 1 if self.age >= 8 and self.age < 9: return 2 if self.age >= 9 and self.age < 10: return 3 if self.age >= 10 and self.age < 11: return 4 else: return 0 # 创建类的对象（实例化类） # python中实例化类不需要使用关键字new（也没有这个关键字），类的实例化类似函数调用方式。 student1 = Student('cuiyongyuan',10) student2 = Student('yuanli', 10) student1.display_student() student2.display_student() student1_class = student1.get_class() student2_class = student2.get_class()

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