Python method of traversing a directory and changing the file name and directory name in batches

This example shows how Python can traverse a directory and change file and directory names in batches. I will share it with you for your reference as follows:

#encoding=utf-8
#author: walker
#date: 2014-03-07
#summary:  Deep traverses the specified directory and changes subdirectories and file names to lowercase 
# Note that this program is only for windows . windows The following file (folder) name is not case sensitive 
import os
import os.path
import shutil
# Reads into the specified directory and converts to the absolute path 
rootdir = raw_input('root dir:\n')
rootdir = os.path.abspath(rootdir)
print('absolute root path:\n*** ' + rootdir + ' ***')
# I'm gonna change the file name 
for parent, dirnames, filenames in os.walk(rootdir):
  for filename in filenames:
    pathfile = os.path.join(parent, filename)
    pathfileLower = os.path.join(parent, filename.lower())
    if pathfile == pathfileLower:  # If the file name itself is all lowercase 
      continue
    print(pathfile + ' --> ' + pathfileLower)
    os.rename(pathfile, pathfileLower)
# After the change directory name, note here topdown Parameters. 
#topdown Determine the order of traversal, if topdown for True , then list first top Under the directory, then the directory of the directory, and so on; 
# Instead, recursively enumerate the deepest subdirectory, then its sibling, then its parent. 
# We need to modify the deep subdirectory first 
for parent, dirnames, filenames in os.walk(rootdir, topdown=False):
  for dirname in dirnames:
    pathdir = os.path.join(parent, dirname)
    pathdirLower = os.path.join(parent, dirname.lower())
    if pathdir == pathdirLower: # If the folder name itself is all lowercase 
      continue
    print(pathdir + ' --> ' + pathdirLower)
    os.rename(pathdir, pathdirLower)

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I hope this article is helpful to you Python programming.