Deleting empty folders and renaming

Question

I have folders whose names are just increasing integers: The folders are stored in 'dirName'

Some folders are empty (like folder 5) and I would like to delete them. After the deletion I would like to rename the remaining folders such that there is no gap between the numbers. (i.e. 1,2,4,6 after deletion, and 1,2,3 (4->3), 4 (6->4) after renaming).

How could I do this with python3?

EDIT: To delete a file or folder: Delete a file or folder

My Code:

# Remove empty folders
for (dirpath, dirnames, filenames) in os.walk(dirName):
for dirname in dirnames:
    try:  # works if directory is empty
        os.rmdir(dirpath + "\\" + dirname)
    except:
        pass
# Rename
iteration = 1
for (dirpath, dirnames, filenames) in os.walk(dirName):
    for dirname in dirnames:
        shutil.move(dirpath + "\\" + dirname, dirpath + "\\" + str(iteration))
        iteration += 1

...it works but it seems rather bulky... //another piece of code

# Remove empty folders
    for (dirpath, dirnames, filenames) in os.walk(dirName):
    for dirname in dirnames:
        try:  # works if directory is empty
            os.rmdir(dirpath + "\\" + dirname)
        except:
            pass
    # Rename
    iteration = 1
    for (dirpath, dirnames, filenames) in os.walk(dirName):
        if dirpath!=dirname:
            os.rename(dirpath,str(iteration))
        iteration += 1

Does this answer your question? [Delete a file or folder](https://stackoverflow.com/questions/6996603/delete-a-file-or-folder) — Yonlif, Dec 14 '19 at 18:35
it doesn't show in your code anywhere that you check if a folder is empty or not — gold_cy, Dec 14 '19 at 18:45
@aws_apprentice This is done by os.rmdir -> will only delete if empty — henry, Dec 14 '19 at 18:47
Do you always have 2 digits for the folder names, or might these be longer? — ggorlen, Dec 14 '19 at 19:00
@ggorlen For now only two digits I doubt that it will be longer anytime soon — henry, Dec 14 '19 at 19:03
@henry You must typechange the name in line os.rename to str. — nitangle, Dec 14 '19 at 19:10
@henry I just tried scripting myself and I think you do not need to use shitutils.move method. Just os.rename worked for me. — nitangle, Dec 14 '19 at 19:16
@nitangle Did somehow not work for me, so I will stick with shitutils.move for now — henry, Dec 14 '19 at 19:18
@nitangle Its detailed here https://stackoverflow.com/questions/22630841/os-rename-fails-to-rename-files-for-a-certain-directory — henry, Dec 14 '19 at 19:22
@henry Ok I understand. I think this should be simple to resolve. Sorry I forgot to mention earlier. When it iterates over the director the first element is that directory itself. So you must skip that directory. Using a simple if worked for me. Is there something wrong with this? — nitangle, Dec 14 '19 at 19:26
@nitangle Could you please post your code as an answer, such that I can better understand ? Thanks — henry, Dec 14 '19 at 19:27
@nitangle I tried it but I get a PermissionError: [WinError 32] — henry, Dec 14 '19 at 19:38
@henry Take a look at this - [link](https://stackoverflow.com/questions/24857779/why-os-rename-sometimes-returns-error-access-is-denied-python) — nitangle, Dec 14 '19 at 19:44

Deleting empty folders and renaming

0 Answers0