I developing a telegram bot using python-telegram-bot and I'm trying to send a message using a function/callback without typing/entering any command. The server itself runs locally on my machine. I also have stored every user_id who sent the /start command into SQLite DB, so I can broadcast my message every time the server is online or about to offline.
My question is, does it possible to send a message every time the server is online without calling any callback?
#!/usr/bin/env python
# pylint: disable=C0116,W0613
# This program is dedicated to the public domain under the CC0 license.
"""
Simple Bot to reply to Telegram messages.
First, a few handler functions are defined. Then, those functions are passed to
the Dispatcher and registered at their respective places.
Then, the bot is started and runs until we press Ctrl-C on the command line.
Usage:
Basic Echobot example, repeats messages.
Press Ctrl-C on the command line or send a signal to the process to stop the
bot.
"""
import sqlite_command
import logging
from telegram import Update, ForceReply
from telegram.ext import Updater, CommandHandler, MessageHandler, Filters, CallbackContext
# Enable logging
logging.basicConfig(
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO
)
logger = logging.getLogger(__name__)
# Define a few command handlers. These usually take the two arguments update and
# context.
def start(update: Update, context: CallbackContext) -> None:
"""Send a message when the command /start is issued."""
user = update.effective_user
update.message.reply_markdown_v2(
fr'Hi {user.mention_markdown_v2()}\!',
reply_markup=ForceReply(selective=True),
)
def help_command(update: Update, context: CallbackContext) -> None:
"""Send a message when the command /help is issued."""
update.message.reply_text('Help!')
def echo(update: Update, context: CallbackContext) -> None:
"""Echo the user message."""
update.message.reply_text(update.message.text)
def main() -> None:
"""Start the bot."""
# Create the Updater and pass it your bot's token.
updater = Updater("TOKEN")
# Get the dispatcher to register handlers
dispatcher = updater.dispatcher
# Send a message without calling a callback
ids = sqlite_command.query_ids()
for chat_id in ids:
dispatcher.bot.send_message(chat_id=chat_id,text='server online')
# on different commands - answer in Telegram
dispatcher.add_handler(CommandHandler("start", start))
dispatcher.add_handler(CommandHandler("help", help_command))
# on non command i.e message - echo the message on Telegram
dispatcher.add_handler(MessageHandler(Filters.text & ~Filters.command, echo))
# Start the Bot
updater.start_polling()
# Run the bot until you press Ctrl-C or the process receives SIGINT,
# SIGTERM or SIGABRT. This should be used most of the time, since
# start_polling() is non-blocking and will stop the bot gracefully.
updater.idle()
if __name__ == '__main__':
main()
