@staticmethod
def find_file(file_ls, string) ->str:
    """
        Find the matching file from a list of files

        Args:
            file_ls: List of files to search
            string: The identifying feature of a filename to search for

        Returns:
            The absolute path to the matching file

        """
    gen = filter(lambda x: string.casefold() in x.casefold(), file_ls)
    return next(gen, None)
