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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_mysqldump_args_and_env_from_url(url):
 """ Constructs list of command line arguments and dictionary of environment variables that can be given to `mysqldump` executable to obtain database dump of the database described in given URL. :param url: Parsed database URL. :type url: urllib.urlparse.ParseResult :return: List of command line arguments as well as dictionary of environment variables that can be used to launch the MySQL dump process to obtain dump of the database. :rtype: tuple[list[str],dict[str,str]] """

    args = [
        # Without this, `INSERT INTO` statements will exclude column names from
        # the output, which are required for sanitation.
        "--complete-insert",

        # This enables use for "exteded inserts" where multiple rows of a table
        # are included in a single `INSERT INTO` statement (contents of the
        # entire table even, if it's within limits). We use it to increase the
        # performance of the sanitation and to decrease the dump size.
        "--extended-insert",

        # This makes the `mysqldump` to attempt to limit size of a single line
        # into 10 megabytes. We use it to reduce memory consumption.
        "--net_buffer_length=10240",

        # Hostname of the database to connect into, should be always present in
        # the parsed database URL.
        "-h",
        url.hostname,
    ]
    env = {}

    if url.port is not None:
        args.extend(("-P", six.text_type(url.port)))

    if url.username:
        args.extend(("-u", url.username))

    if url.password:
        env["MYSQL_PWD"] = url.password

    if len(url.path) < 2 or not url.path.startswith("/"):
        raise ValueError("Name of the database is missing from the URL")

    args.append(url.path[1:])

    return args, env