Pygame + Joystick

I’m getting the pygame “video system not initialized” error with the event.get() statement in the example code. Any idea what is casuing this?

#Setup event information and print data from joystick 
while 1: 
    for e in event.get(): 
        if e.type != QUIT: 
            print '%s: %s' % (event.event_name(e.type), e.dict) 

Traceback (most recent call last):
File “foo.py”, line 34, in
for e in event.get():
pygame.error: video system not initialized