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Use natsort.os_sorted to sort files in the browser - #990

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wkentaro merged 1 commit into
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feature/natsort
Feb 26, 2022
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Use natsort.os_sorted to sort files in the browser#990
wkentaro merged 1 commit into
mainfrom
feature/natsort

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@wkentaro wkentaro commented Feb 25, 2022

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Close #955
Close #989
Close #953

It seems there're many needs for sorting files naturally in the file browser.
With a bit of research, I have decided to use natsort.os_sorted, since it is at least to me the most "natural" if files are sorted as the same way as the file manager of an OS (I use Finder on macOS).

Below is an example of the result:

import re
import natsort

filenames = [
    "img_1.jpg",
    "img_100.jpg",
    "img_10.jpg",
    "img_11.jpg",
    "img_1-1.jpg",
    "img_12-1.jpg",
]

print("original  :", filenames)
print(
    "re.sub(\D):",
    sorted(filenames, key=lambda x: int(re.sub("\D", "", x.lower()))),
)
print("natsorted :", natsort.natsorted(filenames))
print("os_sorted :", natsort.os_sorted(filenames))

print()

filenames = [
    "image1.png",
    "image10.png",
    "image2.png",
    "image200.png",
    "image3.png",
]
print("original  :", filenames)
print(
    "re.sub(\D):",
    sorted(filenames, key=lambda x: int(re.sub("\D", "", x.lower()))),
)
print("natsorted :", natsort.natsorted(filenames))
print("os_sorted :", natsort.os_sorted(filenames))
original  : ['img_1.jpg', 'img_100.jpg', 'img_10.jpg', 'img_11.jpg', 'img_1-1.jpg', 'img_12-1.jpg']
re.sub(\D): ['img_1.jpg', 'img_10.jpg', 'img_11.jpg', 'img_1-1.jpg', 'img_100.jpg', 'img_12-1.jpg']
natsorted : ['img_1-1.jpg', 'img_1.jpg', 'img_10.jpg', 'img_11.jpg', 'img_12-1.jpg', 'img_100.jpg']
os_sorted : ['img_1.jpg', 'img_1-1.jpg', 'img_10.jpg', 'img_11.jpg', 'img_12-1.jpg', 'img_100.jpg']

original  : ['image1.png', 'image10.png', 'image2.png', 'image200.png', 'image3.png']
re.sub(\D): ['image1.png', 'image2.png', 'image3.png', 'image10.png', 'image200.png']
natsorted : ['image1.png', 'image2.png', 'image3.png', 'image10.png', 'image200.png']
os_sorted : ['image1.png', 'image2.png', 'image3.png', 'image10.png', 'image200.png']

@wkentaro wkentaro self-assigned this Feb 25, 2022
@pit-ray pit-ray mentioned this pull request Feb 26, 2022
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@wkentaro
wkentaro merged commit 4d4cd20 into main Feb 26, 2022
@wkentaro
wkentaro deleted the feature/natsort branch February 26, 2022 14:04
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why labelme can't next images as in a sorted sequence as like in folder?

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