class Module(nn.Module):
    def __init__(self):
        super().__init__()
        # ......

    def forward(self, x):
        # ......
        return x


data = ......  # 输入数据

# 实例化一个对象
model = Module()

# 前向传播
model(data)

# 而不是使用下面的
# model.forward(data)  

class Student:
    def __call__(self, param):
        print('I can called like a function')
        print('传入参数的类型是：{}   值为： {}'.format(type(param), param))

        res = self.forward(param)
        return res

    def forward(self, input_):
        print('forward 函数被调用了')

        print('in  forward, 传入参数类型是：{}  值为: {}'.format(type(input_), input_))
        return input_


a = Student()

input_param = a('data')
print("对象a传入的参数是：", input_param)