theano提示:g++ not detected的解决办法

导入theano包后出现如下警告：

WARNING (theano.configdefaults): g++ not detected ! Theano will be unable to execute optimized C-implementations (for both CPU and GPU) and will default to Python implementations. Performance will be severely degraded. To remove this warning, set Theano flags cxx to an empty string.

解决办法：

conda install mingw libpython