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exception message thrown from python side is not transferrred to .net #82

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den-run-ai opened this issue Jul 9, 2015 · 1 comment
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exception message thrown from python side is not transferrred to .net #82

den-run-ai opened this issue Jul 9, 2015 · 1 comment

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@den-run-ai
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If I have exception thrown in Python, e.g.

raise LookupError('the message is not passed to CSHARP')

then on .NET side it only shows:

((Python.Runtime.PythonException)$exception).Message
"LookupError : "
string
@den-run-ai
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I found the problem in the code: IntPtr has to be converted to PyObject_Str() pointer instead of passing the original pointer to GetManagedString().

IntPtr _pyValueStr = PyObject_Str(_pyValue);
string message = Runtime.GetManagedString(_pyValueStr);

https://github.com/pythonnet/pythonnet/blob/master/src/runtime/pythonexception.cs#L38

I found the solution here:

http://stackoverflow.com/a/15907460/2230844

The reason why PyObject_Str() has to be called is because the original pointer is actually a TUPLE, not a string!

@den-run-ai den-run-ai mentioned this issue Jul 16, 2015
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