def create_prereqs_cache_dir():
 try:
  os.makedirs(PREREQS_STATE_DIR)
 except OSError:
  if (not os.path.isdir(PREREQS_STATE_DIR)):
   raise

def create_prereqs_cache_dir ( ) : try : os . makedirs ( PREREQS_STATE_DIR ) except OSError : if ( not os . path . isdir ( PREREQS_STATE_DIR ) ) : raise
create the directory for storing the hashes .