Generate description of options as docstring

src/python_bindings/bindings.cpp

@@ -49,13 +49,28 @@
 
 INITIALIZE_EASYLOGGINGPP
 
-#define DEFINE_ALGORITHM(type, base) \
-    py::class_<Py##type, Py##base##Base>(module, #type).def(py::init<>())
+#define DEFINE_ALGORITHM(type, base)                                                        \
+    auto var##type = py::class_<Py##type, Py##base##Base>(module, #type).def(py::init<>()); \
+    var##type.doc() = MakeDocString<Py##type>();                                            \
+    var##type
 #define DEFINE_ALGORITHM_BASE(base) py::class_<Py##base##Base, PyAlgorithmBase>(module, #base)
 #define DEFINE_FD_ALGORITHM(type) DEFINE_ALGORITHM(type, FdAlgorithm)
 #define DEFINE_AR_ALGORITHM(type) DEFINE_ALGORITHM(type, ArAlgorithm)
 #define DEFINE_UCC_ALGORITHM(type) DEFINE_ALGORITHM(type, UCCAlgorithm)
 
+namespace {
+template <typename AlgoType>
+std::string MakeDocString() {
+    AlgoType algo = AlgoType();
+    std::stringstream docstring;
+    docstring << "Options:\n";
+    for (std::string_view option_name : algo.GetPossibleOptions()) {
+        docstring << option_name << ": " << algo.GetDescription(option_name) << "\n";
+    }
+    return docstring.str();
+}
+}  // namespace
+
 namespace python_bindings {
 
 namespace py = pybind11;