在Pytorch中：Training a classifier 出现 ：RuntimeError 解决办法

在Winows 做Pytorch练习的时候  Training a classifier

出现问题如下

RuntimeError: 
            Attempt to start a new process before the current process
            has finished its bootstrapping phase.
            This probably means that you are on Windows and you have
            forgotten to use the proper idiom in the main module:
                if __name__ == '__main__':
                    freeze_support()
                    ...
            The "freeze_support()" line can be omitted if the program
            is not going to be frozen to produce a Windows executable.

解决办法：在原先的代码中加入

if __name__ == ‘__main__’:
	# your code（开始你的程序）

参考文章： Running a CIFAR 10 image classifier on Windows with pytorch