Finding files within subfolders without using `os.walk` or `glob` libraries

find_files.py

import os
from pprint import pprint

data = {}

def find_files(folder, file_extension):
    for item in os.listdir(folder):
        item = "/".join([folder, item])
        if os.path.isdir(item):
            data[item] = []
            find_files(item, file_extension) # RECURSION TIME
            if len(data[item]) == 0:
                del data[item]
        else:
            if item[-1*len(file_extension):] == file_extension:
                # print(item)
                basename = os.path.basename(item)                
                dirname = os.path.dirname(item).strip("/")                
                data[dirname].append(basename)
                

find_files(".", ".png")

pprint(data)

For Python class, here's what final structure should look like.

{
    './data/furniture/chair': ['metal_chair_back_isometric_400_clr_17527.png'],
    './data/furniture/chair/couch': ['sofa_400_clr_10056.png'],
    './data/furniture/table': ['table_with_cloth_400_clr_10664.png',
        'basic_desk_main_400_clr_17523.png',
        'desk_isometric_back_400_clr_17524.png'
    ],
    './data/new': ['chairs_balancing_stacked_400_clr_11525.png',
        'hotel_room_400_clr_12721.png'
    ],
    './data/old': ['sitting_in_chair_relaxing_400_clr_6028.png',
        'couple_on_swing_bench_400_clr_12844.png'
    ]
}