def main(argv=None):
"""
Entry point for library-like use.
"""
logging.basicConfig(filename='aft.log', level=logging.DEBUG,
format='%(asctime)s - %(name)s - '
'%(levelname)s - %(message)s')
if argv is not None:
backup_argv = sys.argv
sys.argv = argv
DevicesManager()
retval = DevicesManager.run()
if "backup_argv" in locals():
sys.argv = backup_argv
return retval
