[solved] python3 exception

looo · Post by **looo** » Mon Feb 13, 2017 2:29 pm

I need some help with exceptions in python3. When a workbench or command fails the traceback is always "unknown".

<unknown exception traceback>

Searching for this in the source gives this result: https://github.com/FreeCAD/FreeCAD/blob ... ols.c#L281
So the unknown traceback is caused by the traceback variable being NULL.

the function PyError_Fetch looks the same for python2 and 3
https://docs.python.org/3/c-api/excepti ... yErr_Fetch
https://docs.python.org/2/c-api/excepti ... yErr_Fetch

looo · Post by **looo** » Mon Feb 13, 2017 2:52 pm

I think I have found: there is no StringIO in python3

Post by **yorik** » Tue Feb 14, 2017 12:15 pm

looo wrote:I think I have found: there is no StringIO in python3

I think we found a workaround for that somewhere in the py3 branch..

looo · Post by **looo** » Tue Feb 14, 2017 3:56 pm

yes, solution is: StringIO.StringIO (py2) -> io.StringIO (py3)