# Import mailinglist_validation_util from your package
from your_package import your_module


def mailing_list_utils_extended():
     """
       Your docstring documentation starts here.

       For more information on how to proper document your function, please refer to the official PEP8:
        https://www.python.org/dev/peps/pep-0008/#documentation-strings.

    """

    return # Returning the output of the `mailinglist_validation_util` function


if __name__ == '__main__':

    # Calling the function from your package
    print('The output file has length {}.'.format(mailing_list_utils_extended()))
