Some help on user input in script

[Kaos_Method]

Right now, I'm working on a SSH botnet, messing around with different ideas. Currently, I have it setup to where you have the different clients inside of the Python script. You can't add more, manage anything from inside the script, I want to build on that. How would I go about allowing the user to input the IP address, username, and password? I have a general idea behind how it works (in theory), I just don't understand how to actually put that into use. Any help would be greatly appreciated!

Thanks!