sample_async_once.py

replied = set()

@client.on(events.NewMessage)
async def greet(event: events.NewMessage.Event):
    chat_room = await client.get_entity(event.chat_id)
    if event.message.is_group and not event.message.from_id in replied:
            sender = await event.message.get_sender()
            text = 'hi'
            replied.add(event.message.from_id)
            await client.send_message(chat_room, text)
            await client.send_message(
                await client.get_entity(inchidi_id),
                f'''Replying to user with id {sender.id} in
                group {chat_room.title}: {text}'''
            )