I tried:
- pip install python-telegram-bot
- pip3 install python-telegram-bot
- pip install telegram
- pip3 install telegram
But the error keeps showing up telling me there is no such package of 'telegram.ext' offered by python-telegram-bot. However, my text editor with python plugin is able to find the package telegram.ext in my environment. I also tried using command prompt dirtectly on that virtual environment I created, still doesn't work. Seems that this same issue is faced by other posts on internet without any resolve.