LiuFan
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LiuFan
Sorry,it's my fault.I put the word 'train' into the file 'train.txt',program running at csv.reader also read the train.txt and naturally can't found x1x2y1y2 to the map
解决了,之前CSDN每次都必须手动粘贴,现在修改了一下CSDN上的博客设置下的默认编辑器为HTML编辑器就OK了