This is my program example.py .... when i trying to execute this code am getting error as shown below.... can u please help anything for proceeding further.... my python version is 2.4 and ctype that i installed is pygame-ctypes-0.09... #!/usr/bin/env python import drmaa def main(): """Create a drmaa session and exit""" s=drmaa.Session() s.initialize() print 'A session was started successfully' s.exit() if __name__=='__main__': main() ~ [gridmon@g8 DRMAA]$ python example.pyc Traceback (most recent call last): File "example.py", line 3, in ? import drmaa ImportError: No module named drmaa [gridmon@g8 DRMAA]$ cd drmaa-0.4b3 [gridmon@g8 drmaa-0.4b3]$ python example.pyc Traceback (most recent call last): File "example.py", line 3, in ? import drmaa File "/home/gridmon/DRMAA/drmaa-0.4b3/drmaa/__init__.py", line 30, in ? import ctypes as _ct ImportError: No module named ctypes -- Thanks & Regards, Hari Krishna .M