Writes a file with the given filename and content and returns None.

    :param filename: A string containing the target filename.
    :param content: A string containing the data to be written.
    :return: None

def write_file(filename, content):
    """
    Writes a file with the given filename and content and returns None.

    :param filename: A string containing the target filename.
    :param content: A string containing the data to be written.
    :return: None
    """
    with open_file(filename, 'w') as f:
        f.write(content)

    file_prepender(filename)