动态方法与静态对象

class Alex:
    xue = "劳动"
    def __init__(self,name,age):
        self.name = name
        self.age = age


p2 = Alex('小李',16)
print (p2.name)

#动态方法，需要有self：
class MSsqlhelper:
    def add(self,sql):
        print ("add %s success!"%sql)
        pass
    def delete(self,sql):
        print ("del %s success!"%sql)
        pass
    def update(self,sql):
        pass
    def select(self,sql):
        pass

MS = MSsqlhelper()    ##创建对象
MS.add("667788")
MS.delete("5555")

#静态对象的作用(不需要self,但要加staticmethod)：
class MSsqlhelper2:
    @staticmethod
    def add(sql):
        print ("add %s success!" %sql)
        pass
    @staticmethod
    def delete(sql):
        print (sql)
        pass
    @staticmethod
    def update():
        pass
    @staticmethod
    def select(sql):
        pass

MSsqlhelper2.add("9999")
MSsqlhelper2.delete("del877")
print ("_____________________")