Filling textfields on webserver with python?

iam relativ new to Python and a noob in programming.
I wonder if there is a way to fill textfields on a website?
Iam thinking about writing an python application for linux terminals where the user input will be send to the website, placed in the right webforms and then prints the formatted output back in the linux terminal. Is this possible?

It would be nice if such a thing is possible in python since iam just learning it and i like it so far.

I also tried looking for related stuff but i dont know where to start. Found this page here which seems like the right direction but iam not sure: http://ift.tt/1Ks9LxP
Also this seems right (http://ift.tt/28PrnX5) but iam not sure if i can get the new page contents back on the terminal.

Greetings and thanks for any advice,
maxe.