On 28/05/2022 11.11, Larry Martell wrote:
> 
> 
> On Fri, May 27, 2022 at 5:51 PM dn <pythonl...@danceswithmice.info
> <mailto:pythonl...@danceswithmice.info>> wrote:
> 
>     On 28/05/2022 08.14, Larry Martell wrote:
>     > I have a script that has literally been running for 10 years.
>     > Suddenly, for some runs it crashes with the error:
>     >
>     > terminate called after throwing an instance of
>     'boost::python::error_already_set
>     >
>     > No stack trace. Anyone have any thoughts on what could cause this
>     > and/or how I can track it down?
> 
>     1 a change to Python interpreter being used
> 
>     2 a change to the boost library being used
> 
>     3 a change to lower levels in 'the s/w stack' or h/w
> 
>     4 a change to the data being passed-across
> 
> 
> Definitely not 1. 4 is always the case - every run is with different
> data. 2 and 3 I don’t know. What is boost and how does Python use it?
> None of my code is importing it. How can get a stack trace when it
> crashes with just that message?  


A possibly/hopefully helpful explanation appears at:
https://misspent.wordpress.com/2009/10/11/boost-python-and-handling-python-exceptions/

-- 
Regards,
=dn
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