如何将Keras的后端更改为Theano? [英] How to change the backend of Keras to Theano?

问题描述

我安装了keras.当我导入keras时，它说未安装tensorflow.我尝试将keras.json文件中的后端更改为theano.但这无济于事，因为它仍然说没有名为tensorflow的模块.请帮我解决这个问题.

I installed keras. When I import keras, it says tensorflow not installed. I tried changing the backend in keras.json file to theano. But this doesn't help as it still says no module named tensorflow. Please help me fix this.

推荐答案

您尝试您将在以下位置找到Keras配置文件:

you will find the Keras configuration file at:

$HOME/.keras/keras.json

默认配置文件如下:

{
"image_data_format": "channels_last",
"epsilon": 1e-07,
"floatx": "float32",
"backend": "tensorflow"
}

只需将字段backend更改为"theano"，"tensorflow"或"cntk"，当您下次运行任何Keras代码时，Keras将使用新配置.

Simply change the field backend to "theano", "tensorflow", or "cntk", and Keras will use the new configuration next time you run any Keras code.

您还可以定义环境变量KERAS_BACKEND，它将覆盖配置文件中定义的内容:

You can also define the environment variable KERAS_BACKEND and this will override what is defined in your config file :

KERAS_BACKEND=tensorflow python -c "from keras import backend"

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