Python Script to Extract File Sequence Details

extract_file_sequence_details.py

import re
from typing import Dict

def extract_file_details(input_string: str) -> Dict[str, str]:
    """Extracts directory name, file name, frame start, frame end, and extension from the input string.

    Args:
        input_string: A string in the format 'path/to/plates/plates_name.[1001-1017].ext'

    Returns:
        A dictionary with keys 'directory_name', 'file_name', 'frame_start', 'frame_end', 'extension'.
        Returns an empty dictionary if the input string does not match the expected format.

    >>> extract_file_details('path/to/plates/plates_name.[1001-1017].ext')
    {'directory_name': 'path/to/plates', 'file_name': 'plates_name', 'frame_start': '1001', 'frame_end': '1017', 'extension': 'ext'}
    """
    pattern = r'(?P<directory_name>.*)/(?P<file_name>.*)\.\[(?P<frame_start>\d+)-(?P<frame_end>\d+)\]\.(?P<extension>[a-zA-Z0-9]+)$'
    match = re.match(pattern, input_string)
    if match:
        return match.groupdict()
    else:
        return {}


if __name__ == "__main__":
    import doctest
    doctest.testmod()