enumarete filenames with glob pattern

glob_rename.py

from glob import glob
import os
from pathlib import Path
from pprint import pprint
import re

class Counter :
    def __init__(self,name, start=0):
        self.name = name
        self.num = start
    def __call__(self):
        self.num += 1
        return self.num
    def __str__(self):
        return f'{self.name}_{self.num}'
    def __repr__(self):
        return f'{self.__class__.__name__} -> {self.name} : {self.num}'
    def __hash__(self):
        return hash(self.name)

if __name__ == '__main__':
    files_ext = 'png'
    imgs_1920 = glob(f"imgs/_1920/*.{files_ext}")
    imgs_1920 = [ Path(gorsel) for gorsel in imgs_1920]
    old_imgs_1920 = imgs_1920.copy()
    new_filenames = []
    counters = {}
    for img in imgs_1920:
        img_main_name = img.stem
        img_first_part = img_main_name.split('_')[0]
        if img_first_part not in counters:
            counters[img_first_part] = Counter(img_first_part,start=1)
        else:
            counters[img_first_part]()

        new_img_main_name = f'{img_first_part}_{counters[img_first_part].num}'
        new_filenames.append(img.parent / f'{new_img_main_name}.{files_ext}')
    
    pprint(new_filenames)
    pprint(counters)

    for old_name, new_name in zip(old_imgs_1920,new_filenames):
        if os.rename(old_name, new_name) == None:
            print(f'renamed: {old_name} -> {new_name}')