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diff --git a/lib/kross/python/cxx/Exception.hxx b/lib/kross/python/cxx/Exception.hxx
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+++ b/lib/kross/python/cxx/Exception.hxx
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+//----------------------------------*-C++-*----------------------------------//
+// Copyright 1998 The Regents of the University of California. 
+// All rights reserved. See LEGAL.LLNL for full text and disclaimer.
+//---------------------------------------------------------------------------//
+
+#ifndef __CXX_Exception_h
+#define __CXX_Exception_h
+
+#include "Python.h"
+#include "Config.hxx"
+#include "IndirectPythonInterface.hxx"
+
+#include <string>
+#include <iostream>
+
+// This mimics the Python structure, in order to minimize confusion
+namespace Py
+	{
+	class ExtensionExceptionType;
+
+	class Exception
+		{
+	public:
+		Exception( ExtensionExceptionType &exception, const std::string& reason );
+
+		explicit Exception ()
+			{}
+		
+		Exception (const std::string& reason)
+			{
+			PyErr_SetString (Py::_Exc_RuntimeError(), reason.c_str());
+			}
+		
+		Exception (PyObject* exception, const std::string& reason)
+			{
+			PyErr_SetString (exception, reason.c_str());
+			}
+		
+
+		void clear() // clear the error
+		// technically but not philosophically const
+			{
+			PyErr_Clear();
+			}
+		};
+	
+	
+	// Abstract
+	class StandardError: public Exception
+		{
+	protected: 
+		explicit StandardError()
+			{}
+		};
+	
+	class LookupError: public StandardError
+		{
+	protected: 
+		explicit LookupError()
+			{}
+		};
+	
+	class ArithmeticError: public StandardError
+		{
+	protected: 
+		explicit ArithmeticError()
+			{}
+		};
+	
+	class EnvironmentError: public StandardError
+		{
+	protected: 
+		explicit EnvironmentError()
+			{}
+		};
+	
+	// Concrete
+	
+	class TypeError: public StandardError
+		{
+	public:
+		TypeError (const std::string& reason)
+			: StandardError()
+			{
+			PyErr_SetString (Py::_Exc_TypeError(),reason.c_str());
+			}
+		};
+	
+	class IndexError: public LookupError
+		{
+	public:
+		IndexError (const std::string& reason)
+			: LookupError()
+			{
+			PyErr_SetString (Py::_Exc_IndexError(), reason.c_str());
+			}
+		};
+	
+	class AttributeError: public StandardError
+		{
+	public:
+		AttributeError (const std::string& reason)
+			: StandardError()
+			{
+			PyErr_SetString (Py::_Exc_AttributeError(), reason.c_str());
+			}		
+		};
+	
+	class NameError: public StandardError
+		{
+	public:
+		NameError (const std::string& reason)
+			: StandardError()
+			{
+			PyErr_SetString (Py::_Exc_NameError(), reason.c_str());
+			}
+		};
+	
+	class RuntimeError: public StandardError
+		{
+	public:
+		RuntimeError (const std::string& reason)
+			: StandardError()
+			{
+			PyErr_SetString (Py::_Exc_RuntimeError(), reason.c_str());
+			}
+		};
+	
+	class SystemError: public StandardError
+		{
+	public:
+		SystemError (const std::string& reason)
+			: StandardError()
+			{
+			PyErr_SetString (Py::_Exc_SystemError(),reason.c_str());
+			}
+		};
+	
+	class KeyError: public LookupError
+		{
+	public:
+		KeyError (const std::string& reason)
+			: LookupError()
+			{
+			PyErr_SetString (Py::_Exc_KeyError(),reason.c_str());
+			}
+		};
+	
+	
+	class ValueError: public StandardError
+		{
+	public:
+		ValueError (const std::string& reason)
+			: StandardError()
+			{
+			PyErr_SetString (Py::_Exc_ValueError(), reason.c_str());
+			}
+		};
+	
+	class OverflowError: public ArithmeticError
+		{
+	public:
+		OverflowError (const std::string& reason)
+			: ArithmeticError()
+			{
+			PyErr_SetString (Py::_Exc_OverflowError(), reason.c_str());
+			}		
+		};
+	
+	class ZeroDivisionError: public ArithmeticError
+		{
+	public:
+		ZeroDivisionError (const std::string& reason)
+			: ArithmeticError() 
+			{
+			PyErr_SetString (Py::_Exc_ZeroDivisionError(), reason.c_str());
+			}
+		};
+	
+	class FloatingPointError: public ArithmeticError
+		{
+	public:
+		FloatingPointError (const std::string& reason)
+			: ArithmeticError() 
+			{
+			PyErr_SetString (Py::_Exc_FloatingPointError(), reason.c_str());
+			}
+		};
+	
+	class MemoryError: public StandardError
+		{
+	public:
+		MemoryError (const std::string& reason)
+			: StandardError()
+			{
+			PyErr_SetString (Py::_Exc_MemoryError(), reason.c_str());
+			}	
+		};
+	
+	class SystemExit: public StandardError
+		{
+	public:
+		SystemExit (const std::string& reason)
+			: StandardError() 
+			{
+			PyErr_SetString (Py::_Exc_SystemExit(),reason.c_str());
+			}
+		};
+
+	}// Py
+
+#endif