How to use the yagmail.sender.SMTP function in yagmail

content_object['mime_object'] = mime_object
        return content_object

    def feedback(self, message="Awesome features! You made my day! How can I contribute?"):
        """ Most important function. Please send me feedback :-) """
        self.send('kootenpv@gmail.com', 'Yagmail feedback', message)

    def __del__(self):
        try:
            if not self.is_closed:
                self.close()
        except AttributeError:
            pass


class SMTP_SSL(SMTP):

    def login(self, password):
        if self.port == '587':
            self.port = '465'
        self.smtp = smtplib.SMTP_SSL(self.host, self.port, **self.kwargs)
        self.smtp.set_debuglevel(self.debuglevel)
        self.is_closed = False
        if not self.smtp_skip_login:
            password = self._handle_password(password)
            self.smtp.login(self.user, password)

parser.add_argument('-to', '-t', help='Send an email to address "TO"', nargs='+')
    parser.add_argument('-subject', '-s', help='Subject of email', nargs='+')
    parser.add_argument('-contents', '-c', help='Contents to send', nargs='+')
    parser.add_argument('-attachments', '-a', help='Attachments to attach', nargs='+')
    parser.add_argument('-user', '-u', help='Username')
    parser.add_argument('-oauth2', '-o', help='OAuth2 file path')
    parser.add_argument(
        '-password', '-p', help='Preferable to use keyring rather than password here'
    )
    args = parser.parse_args()
    args.contents = (
        args.contents if args.contents else (sys.stdin.read() if not sys.stdin.isatty() else None)
    )
    if args.command == "oauth":
        user = args.user
        SMTP(args.user, oauth2_file=args.file)
        print("Succesful.")
    else:
        yag = SMTP(args.user, args.password, oauth2_file=args.oauth2)
        yag.send(
            to=args.to, subject=args.subject, contents=args.contents, attachments=args.attachments
        )

parser.add_argument('-attachments', '-a', help='Attachments to attach', nargs='+')
    parser.add_argument('-user', '-u', help='Username')
    parser.add_argument('-oauth2', '-o', help='OAuth2 file path')
    parser.add_argument(
        '-password', '-p', help='Preferable to use keyring rather than password here'
    )
    args = parser.parse_args()
    args.contents = (
        args.contents if args.contents else (sys.stdin.read() if not sys.stdin.isatty() else None)
    )
    if args.command == "oauth":
        user = args.user
        SMTP(args.user, oauth2_file=args.file)
        print("Succesful.")
    else:
        yag = SMTP(args.user, args.password, oauth2_file=args.oauth2)
        yag.send(
            to=args.to, subject=args.subject, contents=args.contents, attachments=args.attachments
        )

try:
            if not self.is_closed:
                self.close()
        except AttributeError:
            pass


class SMTP(SMTPBase):
    def login(self):
        if self.oauth2_file is not None:
            self._login_oauth2(self.credentials)
        else:
            self._login(self.credentials)


class SMTP_SSL(SMTP):
    def __init__(self, *args, **kwargs):
        import warnings

        warnings.warn(
            "It is now possible to simply use 'SMTP' with smtp_ssl=True",
            category=DeprecationWarning,
        )
        kwargs["smtp_ssl"] = True
        super(SMTP_SSL, self).__init__(*args, **kwargs)