Time range when parsing messages in telegram. Telegram Bot

Question

I'm making a Telegram bot and I need to set a time range for collecting messages for the last month.

from telethon import TelegramClient
from datetime import date


api_id = my_id
api_hash = ''
phone = ''

client = TelegramClient(phone, api_id, api_hash)
dateStart = date(2022, 12, 27)


async def main():
    async for message in client.iter_messages(-1001369370434, reverse=True, offset_date=dateStart, search='eth'):
        print(message.chat.title, ':', message.date, ':', message.text)

with client:
    client.loop.run_until_complete(main())

Answer 1

The offset_date should be the beginning of the date range.

Then use reverse=True to loop from the offset_date to today's latest message:

---

My complete test script:

import datetime
import asyncio
import re
from telethon import TelegramClient

CHAT  = 1234567
BEGIN = datetime.datetime(2022, 11, 1, 0, 0, 0)

client = TelegramClient('anon', '111111', 'aaaabbbbccccddddeee')
client.start()

async def main():

    chat  = await client.get_input_entity(CHAT)

    async for message in client.iter_messages(chat, reverse=True, offset_date=BEGIN):
        print(message.date, "\t\t", message.text)

client.loop.run_until_complete(main())

Which output's all the messages starting 2022-11-1 until today:

2022-11-01 00:00:43+00:00        ...
2022-11-01 00:00:59+00:00        ...
2022-11-01 00:01:50+00:00        ...
2022-11-01 00:01:50+00:00        ...
2022-11-01 00:05:32+00:00        ...
2022-11-01 00:08:47+00:00        ...
2022-11-01 00:10:00+00:00        ...