Created by: ENGWayne

运行晓曼老师的程序，里面有from paddle.fluid.contrib.trainer import Trainer和from paddle.fluid.contrib.inferencer import Inferencer两次对paddle.fluid.contrib类的调用，但是在官方文档里面搜不到这个类，不知道在哪里去找这两个函数的用法，请指教!

from paddle.fluid.contrib.inferencer import Inferencer inferencer = Inferencer( infer_func=convolutional_neural_network, param_path=params_dirname, place=place)

更改convolutional_neural_network里面的参数之后，出现ValueError ValueError: Variable conv2d_0.w_0 has been created before. the previous shape is (50, 3, 10, 10); the new shape is (40, 3, 10, 10). They are not matched.