Super handy awesome cool neat function to get files using a glob pattern.

get_files.py

import os
import natsort
import glob

def get_files(pattern, force_list=False):
    """Extracts files in alphanumerical order that match the provided glob 
    pattern.

    Parameters
    ----------
    pattern : str or list
        Glob pattern or a list of strings that will be joined together to form 
        a single glob pattern.  
    force_list : bool, optional
        Force output to be a list. If False (default), a string is returned in
        cases where only one file is detected.

    Returns
    -------
    str or list
        Detected file(s).

    Raises
    ------
    FileNotFoundError
        No files were detected using the input pattern.
    """

    if isinstance(pattern, list):
        pattern = os.path.join(*pattern)
    
    files = natsort.natsorted(glob.glob(pattern))
    if not files:
        raise FileNotFoundError('Pattern could not detect file(s)')

    if force_list:
        return files
    else:
        return files[0] if len(files) == 1 else files