Keras 是一个高水平的神经网络 API ，由 Python 写成，并且可以运行于 TensorFlow, CNTK or Theano 之上。它被开发成为专注于促成快速实验。能够在最少可能延误的情况下，从想法到结果，是做好的实验的关键。
Keras is a high-level neural networks API, written in Python and capable of running on top of either TensorFlow, CNTK or Theano. It was developed with a focus on enabling fast experimentation. Being able to go from idea to result with the least possible delay is key to doing good research.
Use Keras if you need a deep learning library that:
- Allows for easy and fast prototyping (through user friendliness, modularity, and extensibility).
- Supports both convolutional networks and recurrent networks, as well as combinations of the two.
- Runs seamlessly on CPU and GPU.
Read the documentation at Keras.io.
Keras is compatible with: Python 2.7-3.5.