Add demote_chat_member method

tgram/methods/__init__.py

@@ -28,6 +28,7 @@
 from .delete_sticker_from_set import DeleteStickerFromSet
 from .delete_sticker_set import DeleteStickerSet
 from .delete_webhook import DeleteWebhook
+from .demote_chat_member import DemoteChatMember
 from .download_file import DownloadFile
 from .edit_chat_invite_link import EditChatInviteLink
 from .edit_chat_subscription_invite_link import EditChatSubscriptionInviteLink
@@ -169,6 +170,7 @@ class TelegramBotMethods(
     DeleteStickerFromSet,
     DeleteStickerSet,
     DeleteWebhook,
+    DemoteChatMember,
     DownloadFile,
     EditChatInviteLink,
     EditChatSubscriptionInviteLink,

tgram/methods/demote_chat_member.py

@@ -0,0 +1,45 @@
+import tgram
+from typing import Union
+
+
+class DemoteChatMember:
+    async def demote_chat_member(
+        self: "tgram.TgBot", chat_id: Union[int, str], user_id: int
+    ) -> bool:
+        """
+        Use this method to demote a user in a supergroup or a channel. The bot must be an administrator
+
+        Telegram documentation: null
+
+        :param chat_id: Unique identifier for the target chat or username of the target channel (
+            in the format @channelusername)
+        :type chat_id: :obj:`int` or :obj:`str`
+
+        :param user_id: Unique identifier of the target user
+        :type user_id: :obj:`int`
+
+        :return: True on success.
+        :rtype: :obj:`bool`
+        """
+
+        result = await self._send_request(
+            "promoteChatMember",
+            chat_id=chat_id,
+            user_id=user_id,
+            is_anonymous=False,
+            can_manage_chat=False,
+            can_delete_messages=False,
+            can_manage_video_chats=False,
+            can_restrict_members=False,
+            can_promote_members=False,
+            can_change_info=False,
+            can_invite_users=False,
+            can_post_stories=False,
+            can_edit_stories=False,
+            can_delete_stories=False,
+            can_post_messages=False,
+            can_edit_messages=False,
+            can_pin_messages=False,
+            can_manage_topics=False,
+        )
+        return result["result"]