[issue27348] traceback (and threading) drops exception message

[Martin Panter]

Martin Panter added the comment:

I traced this back to revision 73afda5a4e4c (Issue 17911), which includes this change to traceback._format_final_exc_line():

-if value is None or not valuestr:
+if value == 'None' or value is None or not valuestr:

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components: +Library (Lib)
keywords: +3.5regression
title: Non-main thread exception handler drops exception message -> traceback (and threading) drops exception message
type:  -> behavior

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27348>
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