import os
import glob


def find_all_files_with_ext(ext):
    pattarn = '*' + os.extsep + ext
    return glob.glob(pattarn)

import os


def _find_all_files_with_ext(dir, ext):
    suffix = os.extsep + ext.lower()
    for root, dirs, files in os.walk(dir):
        for file in files:
            if file.lower().endswith(suffix):
                yield os.path.join(root, file)


def find_all_files_with_ext(dir, ext):
    return list(_find_all_files_with_ext(dir, ext))

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