下载pytorch:
度盘 https://pan.baidu.com/s/1dF6ayLr?errno=0&errmsg=Auth%20Login%20Sucess&&bduss=&ssnerror=0&traceid=#list/path=%2Fpytorch
SyntaxError: Non-ASCII character 非ASCII码：
在文件开头加上 #coding=utf-8
