笨办法40模块, 类和对象class

 class a:
     def change(self, sign, call):
         self.first = sign
         self.second = call
     first = 'first'
     second = 'second'

 z = a()
 print("赋值前：sign = ", z.first)
 c = a()
 print("赋值前：call = ", c.second)

 z.change("hahah", "oooo")
 print("赋值后：", z.second, z.first)

输出结果：

待补