[PyGame] Beginner in pygame, I don't know how to use events

[metulburr]

Thank's a lot ! I have no more error message :) but when I write nothing happens, I don't get it

That code is presented within a for loop of events.

for event in pygame.event.get():
   if event.type == KEYDOWN:
       ...

... was just for whatever you want to put to execute. Its going to run, but not do anything. If you put print('something') instead of ... then you would see something every time you press a key.