Adding defaults to your bot - python-telegram-bot/v13.x-wiki GitHub Wiki
As of version 12.4, PTB supports passing default values for arguments such as parse_mode to reduce the need for repetition. For this purpose, the Defaults class was introduced. This makes it possible to set defaults for often used arguments. These are set at the creation of the bot and are immutable.
parse_modedisable_notificationdisable_web_page_previewallow_sending_without_replytimeoutquotetzinforun_async
Here is a show case for setting parse_mode to ParseMode.HTML and tzinfo to pytz.timezone('Europe/Berlin') by default:
import pytz
import datetime as dtm
from telegram import ParseMode
from telegram.ext import Updater, MessageHandler, Filters, Defaults
def job(context):
chat_id = context.job.context
local_now = dtm.datetime.now(context.bot.defaults.tzinfo)
utc_now = dtm.datetime.utcnow()
text = 'Running job at {} in timezone {}, which equals {} UTC.'.format(
local_now, context.bot.defaults.tzinfo, utc_now
)
context.bot.send_message(chat_id=chat_id, text=text)
def echo(update, context):
# Send with default parse mode
update.message.reply_text('<b>{}</b>'.format(update.message.text))
# Override default parse mode locally
update.message.reply_text('*{}*'.format(update.message.text), parse_mode=ParseMode.MARKDOWN)
update.message.reply_text('*{}*'.format(update.message.text), parse_mode=None)
# Schedule job
context.job_queue.run_once(job, dtm.datetime.now() + dtm.timedelta(seconds=1),
context=update.effective_chat.id)
def main():
"""Instantiate a Defaults object"""
defaults = Defaults(parse_mode=ParseMode.HTML, tzinfo=pytz.timezone('Europe/Berlin'))
"""Start the bot."""
updater = Updater("TOKEN", use_context=True, defaults=defaults)
# Get the dispatcher to register handlers
dp = updater.dispatcher
# on non command text message - echo the message on Telegram
dp.add_handler(MessageHandler(Filters.text & ~Filters.command, echo))
# Start the Bot
updater.start_polling()
updater.idle()
if __name__ == '__main__':
main()