--- /dev/null
+--- opencv-3.4.1/modules/python/src2/cv2.cpp~ 2018-02-23 09:38:33.000000000 +0100
++++ opencv-3.4.1/modules/python/src2/cv2.cpp 2018-07-06 19:10:56.563061072 +0200
+@@ -886,7 +886,7 @@ bool pyopencv_to(PyObject* obj, String&
+ (void)name;
+ if(!obj || obj == Py_None)
+ return true;
+- char* str = PyString_AsString(obj);
++ char* str = (char *)PyString_AsString(obj);
+ if(!str)
+ return false;
+ value = String(str);