Python: Sorted file list

Question

I use os.path to generate a file list from a directory. I am generating a photo gallery from it via Tkinter. However the sorting is completely random. I do not see a greater logic behind the order of the photos, that are displayed from the directory. And when I print the list, it's random as well.

How can I change the order of the list, coming out of this snippet by file name or date modified?

image_list = [os.path.join("/home/pi/fotos/previews",fn) for fn in next(os.walk("/home/pi/fotos/previews"))[2]]

Idan · Accepted Answer · 2017-09-20 21:47:14Z

1

Soritng by name

You can use the built-in function sorted.

Example:

image_list = [os.path.join("/home/pi/fotos/previews",fn) for fn in next(os.walk("/home/pi/fotos/previews"))[2]]
sorted_list = sorted(image_list, key=str.swapcase)

Sorting by last modified date

You can use os.stat(filename).st_mtime in order to see when the file was last modified.

Example:

folder_path = "/home/pi/fotos/previews"
unsorted_list = [file_name for file_name in next(os.walk(folder_path))[2]]
sorted_list = unsorted_list.sort(key=lambda file_name: os.stat(os.path.join(folder_path,file_name)).st_mtime)

edited Sep 20, 2017 at 21:47

answered Sep 20, 2017 at 21:28

Idan

3232 silver badges8 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

daniel_e Over a year ago

Works perfectly. Now all the images are in the right order. Thank you for your help!

Collectives™ on Stack Overflow

Python: Sorted file list

1 Answer 1

Soritng by name

Sorting by last modified date

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Soritng by name

Sorting by last modified date

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related