diff --git a/src/Mod/Mesh/App/MeshPyImp.cpp b/src/Mod/Mesh/App/MeshPyImp.cpp
index bf1e03096c..49d52d4d96 100644
--- a/src/Mod/Mesh/App/MeshPyImp.cpp
+++ b/src/Mod/Mesh/App/MeshPyImp.cpp
@@ -136,14 +136,49 @@ PyObject* MeshPy::copy(PyObject *args)
 PyObject*  MeshPy::read(PyObject *args)
 {
     const char* Name;
-    if (!PyArg_ParseTuple(args, "s",&Name))
-        return NULL;                         
-
-    PY_TRY {
+    if (PyArg_ParseTuple(args, "s",&Name)) {
         getMeshObjectPtr()->load(Name);
-    } PY_CATCH;
-    
-    Py_Return; 
+        Py_Return;
+    }
+
+    PyErr_Clear();
+
+    MeshCore::MeshIO::Format format = MeshCore::MeshIO::Undefined;
+    std::map<std::string, MeshCore::MeshIO::Format> ext;
+    ext["BMS" ] = MeshCore::MeshIO::BMS;
+    ext["STL" ] = MeshCore::MeshIO::BSTL;
+    ext["AST" ] = MeshCore::MeshIO::ASTL;
+    ext["OBJ" ] = MeshCore::MeshIO::OBJ;
+    ext["OFF" ] = MeshCore::MeshIO::OFF;
+    ext["IV"  ] = MeshCore::MeshIO::IV;
+    ext["X3D" ] = MeshCore::MeshIO::X3D;
+    ext["VRML"] = MeshCore::MeshIO::VRML;
+    ext["WRL" ] = MeshCore::MeshIO::VRML;
+    ext["WRZ" ] = MeshCore::MeshIO::WRZ;
+    ext["NAS" ] = MeshCore::MeshIO::NAS;
+    ext["BDF" ] = MeshCore::MeshIO::NAS;
+    ext["PLY" ] = MeshCore::MeshIO::PLY;
+    ext["APLY"] = MeshCore::MeshIO::APLY;
+    ext["PY"  ] = MeshCore::MeshIO::PY;
+
+    PyObject* input;
+    char* Ext;
+    if (PyArg_ParseTuple(args, "Os",&input,&Ext)) {
+        if (ext.find(Ext) != ext.end()) {
+            format = ext[Ext];
+        }
+
+        // read mesh
+        Base::PyStreambuf buf(input);
+        std::istream str(0);
+        str.rdbuf(&buf);
+        getMeshObjectPtr()->load(str, format);
+
+        Py_Return;
+    }
+
+    PyErr_SetString(PyExc_TypeError, "expect string or file object");
+    return NULL;
 }
 
 PyObject*  MeshPy::write(PyObject *args)
@@ -152,32 +187,30 @@ PyObject*  MeshPy::write(PyObject *args)
     char* Ext=0;
     char* ObjName=0;
     PyObject* List=0;
-    if (!PyArg_ParseTuple(args, "s|ssO!",&Name,&Ext,&ObjName,&PyList_Type,&List))
-        return NULL;
 
     MeshCore::MeshIO::Format format = MeshCore::MeshIO::Undefined;
-    if (Ext) {
-        std::map<std::string, MeshCore::MeshIO::Format> ext;
-        ext["BMS" ] = MeshCore::MeshIO::BMS;
-        ext["STL" ] = MeshCore::MeshIO::BSTL;
-        ext["AST" ] = MeshCore::MeshIO::ASTL;
-        ext["OBJ" ] = MeshCore::MeshIO::OBJ;
-        ext["OFF" ] = MeshCore::MeshIO::OFF;
-        ext["IV"  ] = MeshCore::MeshIO::IV;
-        ext["X3D" ] = MeshCore::MeshIO::X3D;
-        ext["VRML"] = MeshCore::MeshIO::VRML;
-        ext["WRL" ] = MeshCore::MeshIO::VRML;
-        ext["WRZ" ] = MeshCore::MeshIO::WRZ;
-        ext["NAS" ] = MeshCore::MeshIO::NAS;
-        ext["BDF" ] = MeshCore::MeshIO::NAS;
-        ext["PLY" ] = MeshCore::MeshIO::PLY;
-        ext["APLY"] = MeshCore::MeshIO::APLY;
-        ext["PY"  ] = MeshCore::MeshIO::PY;
-        if (ext.find(Ext) != ext.end())
-            format = ext[Ext];
-    };
+    std::map<std::string, MeshCore::MeshIO::Format> ext;
+    ext["BMS" ] = MeshCore::MeshIO::BMS;
+    ext["STL" ] = MeshCore::MeshIO::BSTL;
+    ext["AST" ] = MeshCore::MeshIO::ASTL;
+    ext["OBJ" ] = MeshCore::MeshIO::OBJ;
+    ext["OFF" ] = MeshCore::MeshIO::OFF;
+    ext["IV"  ] = MeshCore::MeshIO::IV;
+    ext["X3D" ] = MeshCore::MeshIO::X3D;
+    ext["VRML"] = MeshCore::MeshIO::VRML;
+    ext["WRL" ] = MeshCore::MeshIO::VRML;
+    ext["WRZ" ] = MeshCore::MeshIO::WRZ;
+    ext["NAS" ] = MeshCore::MeshIO::NAS;
+    ext["BDF" ] = MeshCore::MeshIO::NAS;
+    ext["PLY" ] = MeshCore::MeshIO::PLY;
+    ext["APLY"] = MeshCore::MeshIO::APLY;
+    ext["PY"  ] = MeshCore::MeshIO::PY;
+
+    if (PyArg_ParseTuple(args, "s|ssO!",&Name,&Ext,&ObjName,&PyList_Type,&List)) {
+        if (Ext && ext.find(Ext) != ext.end()) {
+            format = ext[Ext];
+        }
 
-    PY_TRY {
         if (List) {
             MeshCore::Material mat;
             Py::List list(List);
@@ -200,9 +233,49 @@ PyObject*  MeshPy::write(PyObject *args)
         else {
             getMeshObjectPtr()->save(Name, format, 0, ObjName);
         }
-    } PY_CATCH;
 
-    Py_Return;
+        Py_Return;
+    }
+
+    PyErr_Clear();
+
+    PyObject* input;
+    if (PyArg_ParseTuple(args, "Os|sO!", &input,&Ext,&ObjName,&PyList_Type,&List)) {
+        if (ext.find(Ext) != ext.end()) {
+            format = ext[Ext];
+        }
+
+        std::auto_ptr<MeshCore::Material> mat;
+        if (List) {
+            mat.reset(new MeshCore::Material);
+            Py::List list(List);
+            for (Py::List::iterator it = list.begin(); it != list.end(); ++it) {
+                Py::Tuple t(*it);
+                float r = (float)Py::Float(t.getItem(0));
+                float g = (float)Py::Float(t.getItem(1));
+                float b = (float)Py::Float(t.getItem(2));
+                mat->diffuseColor.push_back(App::Color(r,g,b));
+            }
+
+            if (mat->diffuseColor.size() == getMeshObjectPtr()->countPoints())
+                mat->binding = MeshCore::MeshIO::PER_VERTEX;
+            else if (mat->diffuseColor.size() == getMeshObjectPtr()->countFacets())
+                mat->binding = MeshCore::MeshIO::PER_FACE;
+            else
+                mat->binding = MeshCore::MeshIO::OVERALL;
+        }
+
+        // write mesh
+        Base::PyStreambuf buf(input);
+        std::ostream str(0);
+        str.rdbuf(&buf);
+        getMeshObjectPtr()->save(str, format, mat.get(), ObjName);
+
+        Py_Return;
+    }
+
+    PyErr_SetString(PyExc_TypeError, "expect string or file object");
+    return NULL;
 }
 
 PyObject*  MeshPy::writeInventor(PyObject *args)
diff --git a/src/Mod/Part/App/TopoShapePyImp.cpp b/src/Mod/Part/App/TopoShapePyImp.cpp
index 8eccc63e28..f25fc12dbe 100644
--- a/src/Mod/Part/App/TopoShapePyImp.cpp
+++ b/src/Mod/Part/App/TopoShapePyImp.cpp
@@ -359,7 +359,7 @@ PyObject*  TopoShapePy::exportBrep(PyObject *args)
     PyObject* input;
     if (PyArg_ParseTuple(args, "O", &input)) {
         try {
-            // read brep
+            // write brep
             Base::PyStreambuf buf(input);
             std::ostream str(0);
             str.rdbuf(&buf);