[pygame] help with subsurfaces

[Greg]

- new to pygame/python
- have a .png that contains all player avatars
- trying to load only a one avatar from that image based on a known size 
and position

Question: What is best way to get a  portion of an larger image and 
display it on the screen. Do I use subsurfaces, or blit, or what is best 
way?  Thanks,

Greg