update python binding (#136)

update pythons binding for `device_handle`

python/sm_channel_py.cpp

@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+#include <nanobind/nanobind.h>
+#include <nanobind/stl/shared_ptr.h>
+#include <nanobind/stl/string.h>
+
+#include <mscclpp/sm_channel.hpp>
+
+namespace nb = nanobind;
+using namespace mscclpp;
+
+void register_sm_channel(nb::module_& m) {
+  nb::class_<SmChannel> smChannel(m, "SmChannel");
+  smChannel
+      .def(nb::init<std::shared_ptr<SmDevice2DeviceSemaphore>, RegisteredMemory, void*, void*>(), nb::arg("semaphore"),
+           nb::arg("dst"), nb::arg("src"), nb::arg("getPacketBuffer"))
+      .def("device_handle", &SmChannel::deviceHandle);
+
+  nb::class_<SmChannel::DeviceHandle>(smChannel, "DeviceHandle");
+
+  m.def("device_handle", &deviceHandle<SmChannel>, nb::arg("smChannel"));
+};