Reposter Telegram bot

#!/usr/bin/env python3
import os
from telegram import Update
from telegram.ext import Updater, MessageHandler, filters, CallbackContext

def repost(update: Update, context: CallbackContext):

    if '#repost' in update.message.text:
        print(update.message.text)
        if update.message.reply_to_message is not None:
            print(update.message.reply_to_message)
            target_chat_id = os.environ.get("SECRET_CHANNEL_ID")
            original_message = update.message.reply_to_message

            try:
                context.bot.forward_message(chat_id=target_chat_id,
                                            from_chat_id=original_message.chat.id,
                                            message_id=original_message.message_id)
            except Exception as e:
                update.message.reply_text(f'Error: {e}')
        else:
            update.message.reply_text('Please reply to a message with #repost to forward it.')

def main():
    print("I'm working")
    bot_token = os.environ.get("TELEGRAM_ACCESS_TOKEN")
    updater = Updater(token=bot_token, use_context=True)
    print("Updater OK")
    dp = updater.dispatcher
    dp.add_handler(MessageHandler(filters.TEXT & (~filters.COMMAND), repost))

    updater.start_polling()
    updater.idle()

if __name__ == "main":
    main()