Count image's colors very fast

[deanhystad]

You should look at pathlib as a replacement for os.scandir. Instead of this:

import os

def text_existing(path):
    obj = os.scandir(path)
    for entry in obj:
        if entry.name.endswith(".pdf"):

You could do this:

from pathlib import Path

def text_existing(path):
    for entry in Path(path).glob("*.pdf"):