OSError: libcudnn.so.7.0: cannot open shared object file: No such file or directory

参考：
【1】ImportError: libcudnn.so.7: cannot open shared object file: No such file or directory
【2】OSError: libcudnn.so.7.0: cannot open shared object file: No such file or directory错误
【3】Could not load dynamic library ‘libcudnn.so.7‘； dlerror: /usr/local/cuda-10.1/lib64/libcudnn.so.7: f

首先确认是否安装了 cudnn

然后确认环境变量是否正确，例如：

export PATH=/usr/local/cuda-XXX/bin:$PATH  
export LD_LIBRARY_PATH=/usr/local/cuda-XXX/lib64:$LD_LIBRARY_PATH
export LIBRARY_PATH=/usr/local/cuda-XXX/lib64:$LIBRARY_PATH

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最后可能的原因：“cuda的路径可能设置错了”

sudo ldconfig /usr/local/cuda-XXX/lib64