python: Add find() to the Python API

This a mapping of uhd::device::find() into uhd.find() on the Python
side. The uhd::device is intentionally not mapped into Python (prefer
MultiUSRP or RfnocGraph instead), so the namespace is moved up one
level.

Example:
>>> import uhd
>>> # Now print the device args for all found B200s:
>>> for dev_args in uhd.find("type=b200")): print(dev_args.to_string())

1 files changed, 19 insertions, 0 deletions

diff --git a/host/lib/device_python.cpp b/host/lib/device_python.cpp
new file mode 100644
index 000000000..43147a09c
--- /dev/null
+++ b/host/lib/device_python.cpp
@@ -0,0 +1,19 @@
+//
+// Copyright 2020 Ettus Research, a National Instruments Brand
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+
+#include <pybind11/complex.h>
+#include <pybind11/pybind11.h>
+#include <pybind11/stl.h>
+
+namespace py = pybind11;
+
+#include "device_python.hpp"
+#include <uhd/device.hpp>
+
+void export_device(py::module& m)
+{
+    m.def("find", [](const uhd::device_addr_t& hint) { return uhd::device::find(hint); });
+}