test.py

import os
import re

items = os.listdir()

def sort_key(name):
    m = re.search(r'chapter-(\d+(?:-\d+)?)', name)
    if m:
        return [int(x) for x in m.group(1).split('-')]
    return [float('inf')]

items.sort(key=sort_key)

try:
  for item in items:
      number = item.split("-")
      if len(number) == 3:
          chap = number[1] + "." + number[2]
      else:
          chap = number[1]
      print("- number: "+chap+"\n  link: https://huggingface.co/datasets/SatyamSSJ10/example-dataset/tree/main/"+item)
except:
    pass