How to create a competent telegram bot mailing list?

Question

Python

I made a mailing list in a cycle, it takes the chatid from the txt file, but as soon as it comes across the id of the person who stopped and banned the bot, the mailing stops, an error 403 falls out. How to write a mailing list correctly? Thanks in advance!

elif message.text == "send":
    
        request = 0
        handle = open("bot_usr.txt", "r")
        for line in handle:
            bot.send_message(line,"текст рассылки",parse_mode='markdown')
            request = request + 1
            time.sleep(0.5)
            if request % 30 == 0:
                time.sleep(1.5)
                request = 0
        handle.close()

Mistake:

ERROR - TeleBot: "ApiException occurred, args=('A request to the Telegram API was unsuccessful. The server returned HTTP 403 Forbidden. Response body:\n[b\'{"ok":false,"error_code":403,"description":"Forbidden: bot was blocked by the user"}\']',)

Answer 1

Use sqlite3 or another database for convenience and use try:, except: to catch this error and then delete the id from the database