source (of information etc)：/questions/3806562/ways-to-move-up-and-down-the-dir-structure-in-python
#Moving up/down dir structure
print ('.') # current level
print ('..') # one level up
print ('../..') # two levels up
# more complex example:
# This will walk the file system beginning in the directory the script is run from. It
# deletes the empty directories at each level
for root, dirs, files in (()):
for name in dirs:
try:
((root, name))
except WindowsError:
print 'Skipping', (root, name)
This will walk the file system beginning in the directory the script is run from. It deletes the empty directories at each level.