Recursively rename file extensions

Question

I am having a difficult time creating a python script that will rename file extensions in a folder and continue to do so in sub directories. Here is the script I have thus far; it can only rename files in the top directory:

#!/usr/bin/python
# Usage: python rename_file_extensions.py

import os
import sys

for filename in os.listdir ("C:\Users\username\Desktop\test\"): # parse through file list in the folder "test"

    if filename.find(".jpg") > 0: # if an .jpg is found

            newfilename = filename.replace(".jpg","jpeg") # convert .jpg to jpeg

            os.rename(filename, newfilename) # rename the file

Asked By: Moreless

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Source

Answer 1

You can process the directory like this:

import os

def process_directory(root):

    for item in os.listdir(root):
        if os.path.isdir(item):
            print("is directory", item)
            process_directory(item)
        else:
            print(item)
            #Do stuff

process_directory(os.getcwd())

Although, this isn’t really necessary. Simply use os.walk which will iterate through all toplevel and further directories / files

Answered By: Pythonista

Answer 2

Do it like this:

for subdir, dirs, files in os.walk(root):
    for f in files:
        if f.find('.jpg') > 0:
            #The rest of your stuff

That should do exactly what you want.

Answered By: Jaron Thatcher

Answer 3

import os
import sys

directory = os.path.dirname(os.path.realpath(sys.argv[0])) #get the directory of your script
for subdir, dirs, files in os.walk(directory):
 for filename in files:
  if filename.find('.jpg') > 0:
   subdirectoryPath = os.path.relpath(subdir, directory) #get the path to your subdirectory
   filePath = os.path.join(subdirectoryPath, filename) #get the path to your file
   newFilePath = filePath.replace(".jpg",".jpeg") #create the new name
   os.rename(filePath, newFilePath) #rename your file

I modified Jaron’s answer with the path to the file and the complete example of renaming the file

Answered By: Hector Rodriguez Jr.

Answer 4

I modified the answer of Hector Rodriguez Jr. a little bit because it would replace ANY occurance of ".jpg" in the path, e.g. /path/to/my.jpg.files/001.jpg would become /path/to/my.jpeg.files/001.jpeg, which is not what you wanted, right?

Although it is generally not a good idea to use dots "." in a folder name, it can happen…

import os
import sys

directory = os.path.dirname(os.path.realpath(sys.argv[0])) # directory of your script
for subdir, dirs, files in os.walk(directory):
    for filename in files:
        if filename.find('.jpg') > 0:
            newFilename = filename.replace(".jpg", ".jpeg") # replace only in filename
            subdirectoryPath = os.path.relpath(subdir, directory) # path to subdirectory
            filePath = os.path.join(subdirectoryPath, filename) # path to file
            newFilePath = os.path.join(subdirectoryPath, newFilename) # new path
            os.rename(filePath, newFilePath) # rename

Answered By: Tobias Schruff

Recursively rename file extensions

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