https://docs.python.org/3/reference/datamodel.html#object.init object.__init__(self[, ...]) 该方法是在初始化的基础上，加工细节。
class student:
def __init__(self,name,age):
self.name=name
self.age=age
student_a=student(name="wang",age=11)
print(student_a.name,student_a.age)
