[C++-sig] Displaying PyErr_Print() error

Paul Grenyer paul at paulgrenyer.co.uk
Thu Nov 27 13:07:11 CET 2003


I originally asked this question some weeks ago, but didn't receive a 
reply. I've seen from googling that other people have had this problem, 
but I haven't seen a solution yet.

I've intergrated boost.python into a COM object and therefore there is 
no std::cerr console to display the error message generated by 
PyErr_Print() after an exception is thrown.

I've tried redirecting std::cerr to a stream:

catch( const error_already_set& )
    std::stringstream str;
    std::streambuf* streamBuffer = std::cerr.rdbuf( str.rdbuf() );

    std::cerr << python << std::endl;					

    std::cerr.rdbuf( streamBuffer );
    throw BadPython( str.str(), __FILE__, __LINE__ );

The contents of "python", a string holding the python code that 
generated the exception, is correctly send to "str", but the exception 
message isn't.

Am I doing something wrong? Is there another way to get the error 
generated by PyErr_Print() in a string?


Please note the change of email address!

Paul Grenyer
Email: paul at paulgrenyer.co.uk
Web: www.paulgrenyer.co.uk

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