Is it safe to use pygame in a thread or a process? [duplicate]

Question

I want to use a pyGame program as a part of another process. Using the following code, pyGame doesn't seem to be processing events; it doesn't respond to the 'q' key nor does it draw the titlebar for the window. If go() is not run as a thread, it works fine. This is under OSX; I'm unsure if that's the problem or not.

import pygame, threading, random

def go():
  pygame.init()
  surf = pygame.display.set_mode((640,480))
  pygame.fastevent.init()

  while True:
    e = pygame.fastevent.poll()
    if e.type == pygame.KEYDOWN and e.unicode == 'q':
      return

    surf.set_at((random.randint(0,640), random.randint(0,480)), (255,255,255))
    pygame.display.flip()

t = threading.Thread(target=go)
t.start()
t.join()

Answer 1

Possibly a long shot, but try making sure you don't import Pygame until you're in the thread. It's just about possible that the problem is that you're importing Pygame on one thread and then using it on another. However, importing on multiple threads can have other issues. In particular, make sure that once you start the Pygame thread you wait for it to finish importing before you do anything that might cause the Python process to shut-down, or you might get a deadlock.