Images via Telegram Bot

https://trainings.boltiot.com/courses/429176/lectures/10237357
Hey,
This is the link for the telegram project. Sending a message through telegram, now if i want to send an image to telegram using the bot from the linux command line how do i do it??
I want to send a raw image or even an image from a file path, any ideas on how the “def” of this program changes??