Keras model.summary()对象转换为字符串 [英] Keras model.summary() object to string

问题描述

我想编写一个带有神经网络超参数和模型体系结构的* .txt文件.是否可以将对象model.summary()写入我的输出文件?

I want to write a *.txt file with the neural network hyperparameters and the model architecture. Is it possible to write the object model.summary() to my output file?

(...)
summary = str(model.summary())
(...)
out = open(filename + 'report.txt','w')
out.write(summary)
out.close

正如您在下面看到的，我碰巧是无".

It happens that I'm getting "None" as you can see below.

Hyperparameters
=========================

learning_rate: 0.01
momentum: 0.8
decay: 0.0
batch size: 128
no. epochs: 3
dropout: 0.5
-------------------------

None
val_acc: 0.232323229313
val_loss: 3.88496732712
train_acc: 0.0965207634216
train_loss: 4.07161939425
train/val loss ratio: 1.04804469418

有什么想法要解决吗?

推荐答案

在我的Keras(2.0.6)和Python(3.5.0)版本中，这对我有用:

With my version of Keras (2.0.6) and Python (3.5.0), this works for me:

# Create an empty model
from keras.models import Sequential
model = Sequential()

# Open the file
with open(filename + 'report.txt','w') as fh:
    # Pass the file handle in as a lambda function to make it callable
    model.summary(print_fn=lambda x: fh.write(x + '\n'))

这会将以下行输出到文件:

This outputs the following lines to the file:

_________________________________________________________________
Layer (type)                 Output Shape              Param #   
=================================================================
Total params: 0
Trainable params: 0
Non-trainable params: 0
_________________________________________________________________

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