On 6/28/2010 8:39 AM, Antoine Pitrou wrote:
However, as the OP argued, most often you need the traceback in order to display file names and line numbers, but you don't need the attached variables (locals and globals).
It then seems to me that one should extract the file name and line number info one wants to save before exiting the exception clause and let the traceback exception and traceback go on exit. Is a library function needed to make extraction easier?
Perhaps this "The reason for this [deletion on exit] is that with the traceback attached to them, exceptions will form a reference cycle with the stack frame, keeping all locals in that frame alive until the next garbage collection occurs." could be strengthened into a better warning that this "That means that you have to assign the exception to a different name if you want to be able to refer to it after the except clause. " may really, really not be a good idea.
-- Terry Jan Reedy