I have encountered :
pywintypes.py:39: DeprecationWarning: imp.get_suffixes() is deprecated;
use the constants defined on importlib.machinery instead
but i don't know how to repair it ? could any one explain for me in detail?
As the message explains you should use the _SUFFIXES constants that are part of importlib.machinery. These were introduced in Python 3.3. The deprecation message means you should now use those constants instead of calling imp.get_suffixes().
If you can't upgrade to Python 3.3 yet then that's fine (things currently still work) but it's something to be aware of when upgrading in the future.