How to use the steam.enums.EResult.OK function in steam

challenge = req.body.challenge
        key, resp.body.key = crypto.generate_session_key(challenge)
        resp.body.crc = binascii.crc32(resp.body.key) & 0xffffffff

        self.send(resp)

        result = self.wait_event(EMsg.ChannelEncryptResult, timeout=5)

        if result is None:
            self.cm_servers.mark_bad(self.current_server_addr)
            gevent.spawn(self.disconnect)
            return

        eresult = result[0].body.eresult

        if eresult != EResult.OK:
            self._LOG.error("Failed to secure channel: %s" % eresult)
            gevent.spawn(self.disconnect)
            return

        self.channel_key = key

        if challenge:
            self._LOG.debug("Channel secured")
            self.channel_hmac = key[:16]
        else:
            self._LOG.debug("Channel secured (legacy mode)")

        self.channel_secured = True
        self.emit(self.EVENT_CHANNEL_SECURED)

depots = self.get_app_depot_info(app_id)

        is_enc_branch = False

        if branch not in depots.get('branches', {}):
            raise SteamError("No branch named %s for app_id %s" % (repr(branch), app_id))
        elif int(depots['branches'][branch].get('pwdrequired', 0)) > 0:
            is_enc_branch = True

            if (app_id, branch) not in self.beta_passwords:
                if not password:
                    raise SteamError("Branch %r requires a password" % branch)

                result = self.check_beta_password(app_id, password)

                if result != EResult.OK:
                    raise SteamError("Branch password is not valid. %r" % result)

                if (app_id, branch) not in self.beta_passwords:
                    raise SteamError("Incorrect password for branch %r" % branch)

        def async_fetch_manifest(app_id, depot_id, manifest_gid, decrypt, name):
            manifest = self.get_manifest(app_id, depot_id, manifest_gid, decrypt)
            manifest.name = name
            return manifest

        tasks = []
        shared_depots = {}

        for depot_id, depot_info in iteritems(depots):
            if not depot_id.isdigit():
                continue

:type  steamid: :class:`int`, :class:`.SteamID`, :class:`.SteamUser`
        :return: result
        :rtype: :class:`EResult`
        """
        if isinstance(steamid, SteamUser):
            steamid = steamid.steam_id
        elif not isinstance(steamid, SteamID):
            steamid = SteamID(steamid)

        resp = self._steam.send_um_and_wait("Player.IgnoreFriend#1",
                                            {"steamid": steamid},
                                            timeout=10)

        if not resp:
            return EResult.Timeout
        elif resp.header.eresult == EResult.OK:
            if steamid not in self._fr:
                self._fr[steamid] = self._steam.get_user(steamid, False)
            self._fr[steamid].relationship = EFriendRelationship(resp.body.friend_relationship)

        return resp.header.eresult

def _handle_logon(self, msg):
        CMClient._handle_logon(self, msg)

        result = EResult(msg.body.eresult)

        if result == EResult.OK:
            self._reconnect_backoff_c = 0
            self.logged_on = True
            self.cell_id = msg.body.cell_id
            self.emit(self.EVENT_LOGGED_ON)
            return

        # CM kills the connection on error anyway
        self.disconnect()

        if result == EResult.InvalidPassword:
            self.login_key = None

        if result in (EResult.AccountLogonDenied,
                      EResult.InvalidLoginAuthCode,
                      EResult.AccountLoginDeniedNeedTwoFactor,
                      EResult.TwoFactorCodeMismatch,

raise RuntimeError("Already logged on")

        if not self.connected and not self._connecting:
            if not self.connect():
                return EResult.Fail

        if not self.channel_secured:
            resp = self.wait_event(self.EVENT_CHANNEL_SECURED, timeout=10)

            # some CMs will not send hello
            if resp is None:
                if self.connected:
                    self.wait_event(self.EVENT_DISCONNECTED)
                return EResult.TryAnotherCM

        return EResult.OK

LOG.info("Logged on as: %s", client.user.name)
    LOG.info("Community profile: %s", client.steam_id.community_url)
    LOG.info("Last logon: %s", client.user.last_logon)
    LOG.info("Last logoff: %s", client.user.last_logoff)
    LOG.info("-"*30)
    LOG.info("Press ^C to exit")


# main bit
LOG.info("Persistent logon recipe")
LOG.info("-"*30)

try:
    result = client.cli_login()

    if result != EResult.OK:
        LOG.info("Failed to login: %s" % repr(result))
        raise SystemExit

    client.run_forever()
except KeyboardInterrupt:
    if client.connected:
        LOG.info("Logout")
        client.logout()

message.body.obfustucated_private_ip = ip_to_int(self.connection.local_address) ^ 0xF00DBAAD
        else:
            message.body.obfustucated_private_ip = login_id

        message.body.account_name = username

        if login_key:
            message.body.login_key = login_key
        else:
            message.body.password = password

        sentry = self.get_sentry(username)
        if sentry is None:
            message.body.eresult_sentryfile = EResult.FileNotFound
        else:
            message.body.eresult_sentryfile = EResult.OK
            message.body.sha_sentryfile = sha1_hash(sentry)

        if auth_code:
            message.body.auth_code = auth_code
        if two_factor_code:
            message.body.two_factor_code = two_factor_code

        self.send(message)

        resp = self.wait_msg(EMsg.ClientLogOnResponse, timeout=30)

        if resp and resp.body.eresult == EResult.OK:
            self.sleep(0.5)

        return EResult(resp.body.eresult) if resp else EResult.Fail

message.body.obfuscated_private_ip.v4 = ip_to_int(self.connection.local_address) ^ 0xF00DBAAD
        else:
            message.body.obfuscated_private_ip.v4 = login_id

        message.body.account_name = username

        if login_key:
            message.body.login_key = login_key
        else:
            message.body.password = password

        sentry = self.get_sentry(username)
        if sentry is None:
            message.body.eresult_sentryfile = EResult.FileNotFound
        else:
            message.body.eresult_sentryfile = EResult.OK
            message.body.sha_sentryfile = sha1_hash(sentry)

        if auth_code:
            message.body.auth_code = auth_code
        if two_factor_code:
            message.body.two_factor_code = two_factor_code

        self.send(message)

        resp = self.wait_msg(EMsg.ClientLogOnResponse, timeout=30)

        if resp and resp.body.eresult == EResult.OK:
            self.sleep(0.5)

        return EResult(resp.body.eresult) if resp else EResult.Fail

def anonymous_login(self):
        """Login as anonymous user

        :return: logon result, see `CMsgClientLogonResponse.eresult `_
        :rtype: :class:`.EResult`
        """
        self._LOG.debug("Attempting Anonymous login")

        eresult = self._pre_login()

        if eresult != EResult.OK:
            return eresult

        self.username = None
        self.login_key = None

        message = MsgProto(EMsg.ClientLogon)
        message.header.steamid = SteamID(type='AnonUser', universe='Public')
        message.body.protocol_version = 65579
        self.send(message)

        resp = self.wait_msg(EMsg.ClientLogOnResponse, timeout=30)
        return EResult(resp.body.eresult) if resp else EResult.Fail