if you wanna create a game or any other application what do you need to learn ?.

Answer 1

In python, try pygame or ren'py.

http://www.pygame.org/download.shtml
https://www.renpy.org/latest.html

Answer 2

There is so many software and languages to develop a software or games, based on the interest how you want to develop it. Basically I use Unity 3d for game developing, others use Java and also manyone HTML5. So, it has no range of learning as your question has no limited answer. :)

Answer 3

java and xml

Answer 4

java is better for design games because the concept of java deals with a object oriented