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Mon Aug 16 13:29:16 CEST 2004 · https://mail.python.org/pipermail/python-dev/2004-August/047873.html

Hello Tim,

On Sun, Aug 15, 2004 at 10:50:25PM -0400, Tim Peters wrote:
> > While I'm in a hacking mood, there might be a way to prevent PyErr_Clear()
> > clear away "asynchronuous" exceptions like RuntimeError, MemoryError, and
> > KeyboardInterrupt:  (...)
> 
> Threads probably complicate that too.  It's dreadful that serious
> problems can get transformed into bogus KeyErrors

Yes.  Here is a patch attempting to do what I described:
 http://www.python.org/sf/1009929

It's an extension of the asynchronous exception mecanism used to signal
between threads.  PyErr_Clear() can send some exceptions to its own thread
using this mecanism.  (So it is thread-safe.)

Armin

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[Python-Dev] Re: Another test_compiler mystery