How to make a custom callback_data in pyTelegramBotApi?

Question

I have an inline keyboard in my message, so I want to transmit some data with callback, like in this example (obv, that's not working, cause callback_data must be a string)

item1 = types.InlineKeyboardButton('DO IT!', callback_data={'tp':'adm', 'com':'addf', 'con':info})

I want my callback handler to handle some data, but I don't really know how to write it

Answer 1

You can make string from your data despite of type you have. For python dict you can use json library:

import json
data = {'tp':'adm', 'com':'addf', 'con':info}
item1 = types.InlineKeyboardButton('DO IT!', callback_data=json.dumps(data))

But FYI it supports max length of only 64 characters (source). So either you'll fit it or find the way how to compress your data.