Good news!
We have just released v2.9 of python-telegram-bot, which includes the following features:
- Support for Channels
- If long-polling times out, an exception is thrown instead of blocking forever
- The Emoji class is now compatible to Python 3, natively
- Because of that, future is now a dependency for python-telegram-bot. Running pip install python-telegram-bot --upgrade will take care of it.