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