转自:https://blog.csdn.net/sinat_29957455/article/details/82778306
https://www.jianshu.com/p/eab5268ded22
1.os.walk遍历目录
Original: https://www.cnblogs.com/BlueBlueSea/p/15843543.html
Author: lypbendlf
Title: python中访问目录
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