A simple script to find TOML files recursively

find_toml_files.py

#!/usr/bin/env python3

import os
import sys


def find_toml_files() -> list[str]:
    def find_toml_files_recursively(directory_path: str, found_toml_files: list[str]) -> None:
        def get_directory_entries(directory_path: str) -> list[str]:
            return list(map(lambda entry: os.path.join(directory_path, entry),
                            filter(lambda entry: not entry.startswith('.'), os.listdir(directory_path))))

        def get_toml_files(entries: list[str]) -> list[str]:
            return list(filter(lambda entry: not os.path.isdir(entry) and entry.endswith('.toml'), entries))

        def get_directories(entries: list[str]) -> list[str]:
            return list(filter(lambda entry: os.path.isdir(entry), entries))

        directory_entries: list[str] = get_directory_entries(directory_path)
        found_toml_files += get_toml_files(directory_entries)
        for directory in get_directories(directory_entries):
            find_toml_files_recursively(directory, found_toml_files)

    found_toml_files: list[str] = []
    if len(sys.argv) > 1:
        try:
            find_toml_files_recursively(' '.join(sys.argv[1:]), found_toml_files)
        except FileNotFoundError as error:
            print(error, file=sys.stderr)
            sys.exit(1)
    else:
        find_toml_files_recursively('.', found_toml_files)
    return found_toml_files


def main() -> int:
    found_toml_files: list[str] = find_toml_files()
    print(found_toml_files)
    return 0


if __name__ == '__main__':
    sys.exit(main())