Patching several old test

libs/lib/examples/args_kwargs.py

libs/lib/examples/func_args.py

libs/lib/examples/test_async.py

libs/lib/examples/test_bloc_setattr.py

libs/lib/examples/test_cleanup.py

libs/lib/examples/test_detect_gevent.py

libs/lib/examples/test_event.py

libs/lib/examples/test_spawn.py

libs/lib/examples/test_spawn_gevent.py

libs/lib/examples/test_static_var.py

libs/lib/examples/test_timer.py

libs/lib/examples/udp_client.py

libs/lib/examples/udp_serv.py