Python-telegram-bot: [QUESTION] conversation persistence

[rspadim]

Hello
How should be implemented the conversations handler state persistence?

For example if i’m in a conversation and i stop the process (control-c), using pickle persistence and start it again, i can’t get back to last state of conversation handler

Am i doing something wrong? Any example how to implment this
Thanks!

[Poolitzer]

did you name the conversation and set persistent to true?
https://python-telegram-bot.readthedocs.io/en/stable/telegram.ext.conversationhandler.html#telegram.ext.ConversationHandler.name

[rspadim]

i will send part of the file i'm using with this bot:

        bot_persistence = PicklePersistence(filename=config['telegram_persistence_pickle'])
        updater = Updater(use_context=True, bot=self, persistence=bot_persistence)

dp.add_handler(
            ConversationHandler(
                entry_points=[CommandHandler('start', bot_start, pass_args=True, pass_job_queue=True)],
                states={
                    0: [
                        MessageHandler(Filters.all, bot_valid),
                        CallbackQueryHandler(bot_valid, pattern='^.*$')
                    ],
                    1: [
                        MessageHandler(Filters.all, bot_run),
                        CallbackQueryHandler(bot_run, pattern='^.*$'),
                    ]
                },
                fallbacks=[MessageHandler(Filters.all, bot_start)],
                name="global",
                allow_reentry=True,
            )
        )

[rspadim]

=) found, the conversation handler have a persistence param, thanks again!

[rspadim]

I got a problem...
i'm using a object (BotObject) to run "the bot"
should "the bot" be outside the object, without the "self" / object declarations?

PicklingError("Can't pickle <function BotObject.bot_valid at 0x7fdfc03542f0>: it's not the same object as __main__.BotObject.bot_valid",)
  File "/usr/local/lib/python3.6/dist-packages/telegram/ext/dispatcher.py", line 390, in process_update
    handler.handle_update(update, self, check, context)
  File "/usr/local/lib/python3.6/dist-packages/telegram/ext/conversationhandler.py", line 394, in handle_update
    self.update_state(new_state, conversation_key)
  File "/usr/local/lib/python3.6/dist-packages/telegram/ext/conversationhandler.py", line 410, in update_state
    (self.conversations.get(key), new_state))
  File "/usr/local/lib/python3.6/dist-packages/telegram/ext/picklepersistence.py", line 217, in update_conversation
    self.dump_singlefile()
  File "/usr/local/lib/python3.6/dist-packages/telegram/ext/picklepersistence.py", line 115, in dump_singlefile
    pickle.dump(all, f)

[Bibo-Joshi]

Everything you want to put in PicklePersistence must be picklable. Google will help you define custom pickle behaviour for you class. Also, if you're using jupyter notebooks, this SE-answer might help.

This is however not an issue with PTB. So I'm going to close this.