os.path : https://www.cnblogs.com/wuxie1989/p/5623435.html
.format(): https://blog.csdn.net/i_chaoren/article/details/77922939
错误：https://stackoverflow.com/questions/48306849/lib-x86-64-linux-gnu-libz-so-1-version-zlib-1-2-9-not-found
.stack():https://blog.csdn.net/csdn15698845876/article/details/73380
自己写caffe的python layer：https://blog.csdn.net/weixin_37251044/article/details/80006836