Code

from pymongo import MongoClient
import re
import os
client = MongoClient()
db = client.audio
files = os.listdir('C:\Files')
for i in range(len(files)):
    id = re.findall(r'\d+', files[i])
    print(''.join(id))
    tmp = {"id": ''.join(id)}
    db.users.insert_one(tmp)