search file extention in sub directories

[mr_byte31]

Hi All,

I am making a script to find a file with certain extension.
here is my code

import glob
searchCriteria = myDir + r'\**\*.csv'
print(searchCriteria)
istpFiles = glob.glob(searchCriteria,recursive=True)

I have two major problems
1- it is very slow as reference mention :

Note: Using the “**” pattern in large directory trees may consume an inordinate amount of time.

2- it sometimes fail to chat files if they start with "." , as reference : If the directory contains files starting with . they won’t be matched by default. For example, consider a directory containing card.gif and .card.gif:
[inline]>>> import glob
>>> glob.glob('*.gif')
['card.gif']
>>> glob.glob('.c*')
['.card.gif'][/inline]

ref for the issues : https://docs.python.org/3.7/library/glob...#glob.glob


I am asking for a better code that can fit my needs. any suggestions?