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timerbot.py

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#!/usr/bin/env python

# -*- coding: utf-8 -*-

#

# Simple Bot to send timed Telegram messages

# This program is dedicated to the public domain under the CC0 license.

"""

This Bot uses the Updater class to handle the bot and the JobQueue to send

timed 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 Alarm Bot example, sends a message after a set time.

Press Ctrl-C on the command line or send a signal to the process to stop the

bot.

"""

from telegram.ext import Updater, CommandHandler, Job

import logging

# 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 bot and

# update. Error handlers also receive the raised TelegramError object in error.

def start(bot, update):

update.message.reply_text('Hi! Use /set <seconds> to set a timer')

def alarm(bot, job):

"""Function to send the alarm message"""

bot.send_message(job.context, text='Beep!')

def set(bot, update, args, job_queue, chat_data):

"""Adds a job to the queue"""

chat_id = update.message.chat_id

try:

# args[0] should contain the time for the timer in seconds

due = int(args[0])

if due < 0:

update.message.reply_text('Sorry we can not go back to future!')

return

# Add job to queue

job = job_queue.run_once(alarm, due, context=chat_id)

chat_data['job'] = job

update.message.reply_text('Timer successfully set!')

except (IndexError, ValueError):

update.message.reply_text('Usage: /set <seconds>')

def unset(bot, update, chat_data):

"""Removes the job if the user changed their mind"""

if 'job' not in chat_data:

update.message.reply_text('You have no active timer')

return

job = chat_data['job']

job.schedule_removal()

del chat_data['job']

update.message.reply_text('Timer successfully unset!')

def error(bot, update, error):

logger.warning('Update "%s" caused error "%s"' % (update, error))

def main():

updater = Updater("TOKEN")

# 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", start))

dp.add_handler(CommandHandler("set", set,

pass_args=True,

pass_job_queue=True,

pass_chat_data=True))

dp.add_handler(CommandHandler("unset", unset, pass_chat_data=True))

# log all errors

dp.add_error_handler(error)

# Start the Bot

updater.start_polling()

# Block 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()