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persistentconversationbot.py
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#!/usr/bin/env python
# pylint: disable=C0116,W0613
# This program is dedicated to the public domain under the CC0 license.
"""
First, a few callback 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:
Example of a bot-user conversation using ConversationHandler.
Send /start to initiate the conversation.
Press Ctrl-C on the command line or send a signal to the process to stop the
bot.
"""
import logging
from typing import Dict
from telegram import ReplyKeyboardMarkup, Update, ReplyKeyboardRemove
from telegram.ext import (
Updater,
CommandHandler,
MessageHandler,
Filters,
ConversationHandler,
PicklePersistence,
CallbackContext,
)
# Enable logging
logging.basicConfig(
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO
)
logger = logging.getLogger(__name__)
CHOOSING, TYPING_REPLY, TYPING_CHOICE = range(3)
reply_keyboard = [
['Age', 'Favourite colour'],
['Number of siblings', 'Something else...'],
['Done'],
]
markup = ReplyKeyboardMarkup(reply_keyboard, one_time_keyboard=True)
def facts_to_str(user_data: Dict[str, str]) -> str:
"""Helper function for formatting the gathered user info."""
facts = [f'{key} - {value}' for key, value in user_data.items()]
return "\n".join(facts).join(['\n', '\n'])
def start(update: Update, context: CallbackContext) -> int:
"""Start the conversation, display any stored data and ask user for input."""
reply_text = "Hi! My name is Doctor Botter."
if context.user_data:
reply_text += (
f" You already told me your {', '.join(context.user_data.keys())}. Why don't you "
f"tell me something more about yourself? Or change anything I already know."
)
else:
reply_text += (
" I will hold a more complex conversation with you. Why don't you tell me "
"something about yourself?"
)
update.message.reply_text(reply_text, reply_markup=markup)
return CHOOSING
def regular_choice(update: Update, context: CallbackContext) -> int:
"""Ask the user for info about the selected predefined choice."""
text = update.message.text.lower()
context.user_data['choice'] = text
if context.user_data.get(text):
reply_text = (
f'Your {text}? I already know the following about that: {context.user_data[text]}'
)
else:
reply_text = f'Your {text}? Yes, I would love to hear about that!'
update.message.reply_text(reply_text)
return TYPING_REPLY
def custom_choice(update: Update, context: CallbackContext) -> int:
"""Ask the user for a description of a custom category."""
update.message.reply_text(
'Alright, please send me the category first, for example "Most impressive skill"'
)
return TYPING_CHOICE
def received_information(update: Update, context: CallbackContext) -> int:
"""Store info provided by user and ask for the next category."""
text = update.message.text
category = context.user_data['choice']
context.user_data[category] = text.lower()
del context.user_data['choice']
update.message.reply_text(
"Neat! Just so you know, this is what you already told me:"
f"{facts_to_str(context.user_data)}"
"You can tell me more, or change your opinion on something.",
reply_markup=markup,
)
return CHOOSING
def show_data(update: Update, context: CallbackContext) -> None:
"""Display the gathered info."""
update.message.reply_text(
f"This is what you already told me: {facts_to_str(context.user_data)}"
)
def done(update: Update, context: CallbackContext) -> int:
"""Display the gathered info and end the conversation."""
if 'choice' in context.user_data:
del context.user_data['choice']
update.message.reply_text(
f"I learned these facts about you: {facts_to_str(context.user_data)}Until next time!",
reply_markup=ReplyKeyboardRemove(),
)
return ConversationHandler.END
def main() -> None:
"""Run the bot."""
# Create the Updater and pass it your bot's token.
persistence = PicklePersistence(filename='conversationbot')
updater = Updater("TOKEN", persistence=persistence)
# Get the dispatcher to register handlers
dispatcher = updater.dispatcher
# Add conversation handler with the states CHOOSING, TYPING_CHOICE and TYPING_REPLY
conv_handler = ConversationHandler(
entry_points=[CommandHandler('start', start)],
states={
CHOOSING: [
MessageHandler(
Filters.regex('^(Age|Favourite colour|Number of siblings)$'), regular_choice
),
MessageHandler(Filters.regex('^Something else...$'), custom_choice),
],
TYPING_CHOICE: [
MessageHandler(
Filters.text & ~(Filters.command | Filters.regex('^Done$')), regular_choice
)
],
TYPING_REPLY: [
MessageHandler(
Filters.text & ~(Filters.command | Filters.regex('^Done$')),
received_information,
)
],
},
fallbacks=[MessageHandler(Filters.regex('^Done$'), done)],
name="my_conversation",
persistent=True,
)
dispatcher.add_handler(conv_handler)
show_data_handler = CommandHandler('show_data', show_data)
dispatcher.add_handler(show_data_handler)
# 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()