Fix handling python exposure of shared pointer objects

Author: highperformancecoder

RESTProcessExample/RESTProcessExample.h

@@ -164,7 +164,7 @@ struct IPoly: public PolyRESTProcess<IPoly> {};
 
 struct Poly: public PolyRESTProcess<Poly, IPoly>
 {
-  int a;
+  int a=5;
 };
 
 // root type
@@ -175,7 +175,7 @@ struct Root
   Bar1 bar1;
 
   std::shared_ptr<IPoly> spoly{new Poly};
-  std::shared_ptr<Bar> sbar{new Bar};
+  std::shared_ptr<Bar> sbar{new Bar(0)};
 
   FooBar1& getFB1() {
     static FooBar1 m;

RESTProcessExample/example.py

@@ -220,3 +220,7 @@ def expectThrow(f):
 fb=FooBar1()
 assert foo.b()==2
 assert fb.f.b()==0
+
+# shared pointer support
+assert root.sbar.f()==20
+assert root.spoly.a()==5

pythonBuffer.h

@@ -571,6 +571,7 @@ namespace classdesc
     }
 
     static PyObject* getAttro(PyObject* self, PyObject* attr)
+      try
     {
       auto cppWrapper=static_cast<CppWrapper*>(self);
       auto i=cppWrapper->methods.find(PyUnicode_AsUTF8(attr));
@@ -579,8 +580,16 @@ namespace classdesc
           Py_INCREF(i->second);
           return i->second;
         }
+      else
+        {
+          auto methods=cppWrapper->command->list();
+          auto attribute=methods.find(string(".")+PyUnicode_AsUTF8(attr));
+          if (attribute!=methods.end())
+            return CppWrapper::create(attribute->second, false);
+          }
       return PyObject_GenericGetAttr(self,attr);
     }
+    CLASSDESC_PY_EXCEPTION_ABSORB(nullptr);
 
     static int setAttro(PyObject* self, PyObject* name, PyObject* attr)
     {