How would i go about getting a "bullet" picture to "shoot" out of my characters gun when hitting spacebar? I think i need to make a class for it because it would be a sprite but i dont know how to go about it. please help.
You have not given a lot of information for this, but basically, you will create a class, yes.
When you get a spacebar event, you will instantiate the bullet class with all the relevand information, like the bullets cordinates(based on the character cordinates), moving direction, speed and so on.
You will have an array of these bullet objects and the game loop checks all the relevant things about them, like drawing cordinates, collision etc.
This is a very basic example and there are lots of ways where you can imrove it, but it will hopefully give you some ideas on implementing it.
In addition I would like to note that I have not done anything similar in Python or Pygame so there can very well be an easier way.
Ruby on Rails,ASP.NET MVC, jQueryand everything else web.. now also trying my hand on games.