importerror: could not find 'cudart64_100.dll'. tensorflow requires that this dll be installed in a directory that is named in your %path% environment variable. download and install cuda 10.0 from this url: https://developer.nvidia.com/cuda-90-download-ar

这是一个错误提示，意思是缺少 'cudart64_100.dll' 这个文件，需要安装 CUDA 10.0 并将它所在的目录添加到系统环境变量%path%中。可以从此链接下载并安装 CUDA 10.0：https://developer.nvidia.com/cuda-90-download-ar。