Nick Coghlan added the comment:
Antoine - I like your idea, but I think it's a separate issue. I agree with
Guido that exposing some lower level non-formatting APIs in the traceback
module would be helpful.
I see Guido's suggestion here as similar to the change we just made in the dis
module to expose a dis.get_instructions iterator. That change makes it much
easier to work with the disassembler output programmatically, whereas the
module was previously too focused on displaying text with a specific format.
My current thoughts: define a "TracebackSummary" with the following fields:
exc_type
exc_repr
stack_summary
cause
context
stack_summary would be a list of (filename, lineno, functionname) triples as
Guido suggested (probably a named tuple)
cause and context would be either None or a reference to an appropriate
TracebackSummary object
Basically, the summary should contain all of the information needed to create
the formatted traceback output, without actually doing any formatting (aside
from calling repr() on the exception)
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