面向对象



#面向对象
class Student:
 
    def __init__(self,name,grade): #注意init前后的下划线，若是短的则会报参数不对
        self.name=name
        self.grade=grade
    def introduce(self):
        print("hi,I'm",self.name)
        print(" my grade is",self.grade)
    def improve(self,account):
        self.grade=self.grade+account
 
jim=Student('jim',86)
jim.introduce()

jim.improve(10)
jim.introduce()