utils

from datetime import datetime

import re

def is_valid_filename(file_name: str) -> bool:

    pattern = r'^.*\..*$'

    if re.match(pattern, file_name):

        return True

    else:

        raise False

def is_valid_datetime_format(date_str: str, format='%Y-%m-%d %H:%M:%S') -> bool:

    try:

        datetime.strptime(date_str, format)

        return True

    except ValueError:

        raise ValueError(f"Incorrect data format, should be {format}")

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