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@liuhh02
Last active October 4, 2021 10:57
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Starter python code for deploying telegram bot with heroku using the library python-telegram-bot
"""
Simple Bot to reply to Telegram messages taken from the python-telegram-bot examples.
Deployed using heroku.
Author: liuhh02 https://medium.com/@liuhh02
"""
import logging
from telegram.ext import Updater, CommandHandler, MessageHandler, Filters
import os
PORT = int(os.environ.get('PORT', 5000))
# Enable logging
logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
level=logging.INFO)
logger = logging.getLogger(__name__)
TOKEN = 'YOURTELEGRAMBOTTOKEN'
# Define a few command handlers. These usually take the two arguments update and
# context. Error handlers also receive the raised TelegramError object in error.
def start(update, context):
"""Send a message when the command /start is issued."""
update.message.reply_text('Hi!')
def help(update, context):
"""Send a message when the command /help is issued."""
update.message.reply_text('Help!')
def echo(update, context):
"""Echo the user message."""
update.message.reply_text(update.message.text)
def error(update, context):
"""Log Errors caused by Updates."""
logger.warning('Update "%s" caused error "%s"', update, context.error)
def main():
"""Start the bot."""
# Create the Updater and pass it your bot's token.
# Make sure to set use_context=True to use the new context based callbacks
# Post version 12 this will no longer be necessary
updater = Updater(TOKEN, use_context=True)
# Get the dispatcher to register handlers
dp = updater.dispatcher
# on different commands - answer in Telegram
dp.add_handler(CommandHandler("start", start))
dp.add_handler(CommandHandler("help", help))
# on noncommand i.e message - echo the message on Telegram
dp.add_handler(MessageHandler(Filters.text, echo))
# log all errors
dp.add_error_handler(error)
# Start the Bot
updater.start_webhook(listen="0.0.0.0",
port=int(PORT),
url_path=TOKEN)
updater.bot.setWebhook('https://yourherokuappname.herokuapp.com/' + TOKEN)
# 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()
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