(base) C:\Users\jiangshan>conda create --name keras python=3.6
==================================================================================
Collecting package metadata: done
Solving environment: done
## Package Plan ##
environment location: S:\Users\jiangshan\Anaconda3\envs\keras
added / updated specs:
- python=3.6
The following NEW packages will be INSTALLED:

certifi anaconda/cloud/conda-forge/win-64::certifi-2019.3.9-py36_0
pip anaconda/cloud/conda-forge/win-64::pip-19.0.3-py36_0
python anaconda/cloud/conda-forge/win-64::python-3.6.7-he025d50_1004
setuptools anaconda/cloud/conda-forge/win-64::setuptools-40.8.0-py36_0
vc anaconda/cloud/conda-forge/win-64::vc-14-0
vs2015_runtime anaconda/cloud/conda-forge/win-64::vs2015_runtime-14.0.25420-0
wheel anaconda/cloud/conda-forge/win-64::wheel-0.33.1-py36_0
wincertstore anaconda/cloud/conda-forge/win-64::wincertstore-0.2-py36_1002
===================================================================================

(base) C:\Users\jiangshan>conda activate keras

(keras) C:\Users\jiangshan>pip install tensorflow==1.5【需要指定版本】
...............
Successfully installed absl-py-0.7.0 bleach-1.5.0 html5lib-0.9999999 markdown-3.0.1 numpy-1.16.2 protobuf-3.7.0 six-1.12.0 tensorflow-1.5.0 tensorflow-tensorboard-1.5.1 werkzeug-0.14.1

(keras) C:\Users\jiangshan>pip install keras
...............
Successfully installed h5py-2.9.0 keras-2.2.4 keras-applications-1.0.7 keras-preprocessing-1.0.9 pyyaml-5.1 scipy-1.2.1

(keras) C:\Users\jiangshan>conda install git
(keras) C:\Users\jiangshan>cd F:\workspace>cd GitHub_web_download
(keras) F:\workspace>cd GitHub_web_download>git clone https://github.com/fchollet/keras.git

(keras) F:\workspace>cd GitHub_web_download>cd keras/examples/
(keras) F:\workspace\GitHub_web_download\keras\examples>python mnist_mlp.py
............................................................................
Test loss: 0.11112916950749117
Test accuracy: 0.9833
(keras) F:\workspace\GitHub_web_download\keras\examples>

成功