os.PATH

# import os
# from os import path
# p='/etc/system/if-config'
# ret=path.split(p)
# print(ret)
# # p =path.join('/etc','nihao','w')
# # # ret=path.dirname(p)
# # # ret=path.basename(p)
# # # print(ret)
# # print(p)
# # path.exists('/etc')

from pathlib import Path