Keka Reminder Telegram Bot. Is a telegram scheduler bot that can be used to send timely messages into chats/groups as desired

main.py

import logging
import pytz
import datetime
from telegram import Update
from telegram.ext import Updater, CommandHandler, CallbackContext

API_KEY = "API TOKEN"

logging.basicConfig(
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO
)

logger = logging.getLogger(__name__)

def start(update: Update, context: CallbackContext) -> None:

    update.message.reply_text('Hi! This is Keka 11am Reminder Bot. Use /set to set your reminder.\nTo cancel reminders, use /unset.\nIncase of any issues/improvements, contact my creator, @rachejazz.')

def help_command(update: Update, context: CallbackContext) -> None:

    update.message.reply_text('/set to set your reminder.\n/unset to cancel reminder.\n/help to show this menu again.\nIncase of any issues/improvements, contact my creator, @rachejazz.')

def alarm_1(context: CallbackContext) -> None:

    job = context.job
    context.bot.send_message(job.context, text='Keka Clock In Reminder!')

def alarm_2(context: CallbackContext) -> None:

    job = context.job
    context.bot.send_message(job.context, text='Keka Clock Out Reminder!')

def remove_job_if_exists(name: str, context: CallbackContext) -> bool:

    current_jobs = context.job_queue.get_jobs_by_name(name)
    if not current_jobs:
        return False
    for job in current_jobs:
        job.schedule_removal()
    return True


def set_timer(update: Update, context: CallbackContext) -> None:

    chat_id = update.message.chat_id
    try:

      time_z = pytz.timezone('Asia/Kolkata')
      due_i = datetime.time(9, 55, tzinfo=time_z)
      day = (0,1,2,3,4)
      due_o = datetime.time(18, 55, tzinfo=time_z)

      job_removed = remove_job_if_exists(str(chat_id), context)
      context.job_queue.run_daily(alarm_1, due_i, day, context=chat_id, name=str(chat_id))
      context.job_queue.run_daily(alarm_2, due_o, day, context=chat_id, name=str(chat_id))

      text = f'Keka Reminder is set for {update.effective_user.mention_markdown_v2()}\!'
      if job_removed:
          text += ' Old one was removed'
      update.message.reply_markdown_v2(text)

    except Exception as e:
       print(e)


def unset(update: Update, context: CallbackContext) -> None:

    chat_id = update.message.chat_id
    job_removed = remove_job_if_exists(str(chat_id), context)
    text = 'Reminder successfully cancelled!' if job_removed else 'You have no active timer.'
    update.message.reply_text(text)


def main() -> None:
    updater = Updater(API_KEY)

    dispatcher = updater.dispatcher

    dispatcher.add_handler(CommandHandler("start", start))
    dispatcher.add_handler(CommandHandler("set", set_timer))
    dispatcher.add_handler(CommandHandler("help", help_command))
    dispatcher.add_handler(CommandHandler("unset", unset))

    updater.start_polling()

    updater.idle()


if __name__ == '__main__':
    main()