Pyrogram Delete All Messages in a Chat with Double Clients.

deleteAllMessages.py

import asyncio
from pyrogram import Client
from pyrogram.errors import FloodWait


chat_id = -100123456789
api_hash = 'abc'
api_id = 123
string_session1 = ''
string_session2 = ''

clients = {}

clients['account1'] = Client(name='session1', api_id=api_id, api_hash=api_hash, session_string=string_session1)
clients['account2'] = Client(name='session2', api_id=api_id, api_hash=api_hash, session_string=string_session2)

ids = []

offset_id = 0


async def check_and_delete(ids):
    if len(ids) >= 100:
        try:
            await clients['account1'].delete_messages(chat_id, list(set(ids)))
            ids = []
        except FloodWait:
            try:
                await clients['account2'].delete_messages(chat_id, list(set(ids)))
                ids = []
            except FloodWait as flood:
                await asyncio.sleep(flood.value)
                await clients['account2'].delete_messages(chat_id, list(set(ids)))
                ids = []


async def main():
    await clients['account1'].start()
    await clients['account2'].start()
    while True:
        try:
            async for message in clients['account1'].get_chat_history(chat_id, offset_id=offset_id):
                ids.append(message.id)
                offset_id = message.id
                await check_and_delete(ids)
            if ids: await clients['account2'].delete_messages(chat_id, list(set(ids)))
            break
        except FloodWait:
            try:
                async for message in clients['account2'].get_chat_history(chat_id, offset_id=offset_id):
                    ids.append(message.id)
                    offset_id = message.id
                    await check_and_delete(ids)
                if ids: await clients['account2'].delete_messages(chat_id, list(set(ids)))
                break
            except FloodWait as error:
                await asyncio.sleep(error.value)


asyncio.run(main())