Create chat_member_example.py

examples/chat_member_example.py

@@ -0,0 +1,33 @@
+import telebot
+from telebot import types,util
+
+bot = telebot.TeleBot("token")
+
+#chat_member_handler. When status changes, telegram gives update. check status from old_chat_member and new_chat_member.
+@bot.chat_member_handler()
+def chat_m(message: types.ChatMemberUpdated):
+    old = message.old_chat_member
+    new = message.new_chat_member
+    if new.status == "member":
+        bot.send_message(message.chat.id,"Hello {name}!".format(name=new.user.first_name)) # Welcome message
+
+#if bot is added to group, this handler will work
+@bot.my_chat_member_handler()
+def my_chat_m(message: types.ChatMemberUpdated):
+    old = message.old_chat_member
+    new = message.new_chat_member
+    if new.status == "member":
+        bot.send_message(message.chat.id,"Somebody added me to group") # Welcome message, if bot was added to group
+        bot.leave_chat(message.chat.id)
+
+#content_Type_service is:
+#'new_chat_members', 'left_chat_member', 'new_chat_title', 'new_chat_photo', 'delete_chat_photo', 'group_chat_created',
+#'supergroup_chat_created', 'channel_chat_created', 'migrate_to_chat_id', 'migrate_from_chat_id', 'pinned_message',
+#'proximity_alert_triggered', 'voice_chat_scheduled', 'voice_chat_started', 'voice_chat_ended', 
+#'voice_chat_participants_invited', 'message_auto_delete_timer_changed'
+# this handler deletes service messages
+
+@bot.message_handler(content_types=util.content_type_service)
+def delall(message: types.Message):
+    bot.delete_message(message.chat.id,message.message_id)
+bot.polling(allowed_updates=util.update_types)