python - pygame: from pygame.locals import * not working -

in code

from pygame.locals import *

gets following error message:

traceback (most recent call last): file "<pyshell#1>", line 1, in <module>     pygame.locals import * importerror: no module named 'pygame.locals' 

i have ensured don't have files named pygame.py or pygame.pyc in working directory , i'm using python3.3.5 , pygame-1.9.2a0-hg on windows 10. there other reason error?