os.path.join()会忽略第一个绝对路径之前的参数！
示例：
>>> import os >>> os.path.join(‘/home‘, ‘mushroomer‘) ‘/home/mushroomer‘ >>> os.path.join(‘/home‘, ‘/mushroomer‘) ‘/mushroomer‘ >>> os.path.join(‘/home‘, ‘./mushroomer‘) ‘/home/./mushroomer‘
参考资料：https://docs.python.org/3.7/library/os.path.html?#module-os.path
原文：https://www.cnblogs.com/adjwang/p/12237173.html