How do I sort the filenames for a dataset, I got the names using glob.glob('path/*.png')

Question

image

Hi. I am trying to load the dataset, I want to get the filenames sorted as 1,2,3..., But I am getting them as 1, 10,100,1000.... as you can see in the images? How should I get it done?

filenames = glob.glob("/content/path/train/*.png")
filenames.sort()
images = [cv2.imread(img) for img in filenames]

Answer 1

Well, that IS alphabetical order... If you know the names are all numeric, then you can supply a key function to .sort() that uses the ordering you want.

def bynumber(fn):
    return int(os.path.basename(fn)[:-4])
...
filenames.sort( key=bynumber )

Alternatively:

filenames.sort( key=lambda fn: int(os.path.basename(fn)[:-4]) )