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> Consider:
> r(a()/b(),
> d()/e(),
> g=h()/i(),
> )
I tried to run this, with e() == 0, and got:
Traceback (most recent call last):
 File "deleteme.py", line 6, in <module>
 d()/e(),
ZeroDivisionError: division by zero
This is actually a good point, because in this specific case the traceback is correct, and showing all the lines would make things worse.
> If 1 of the expressions raises an error, do you really want
> all 500 lines in the traceback?
I assume it wouldn't be too difficult to limit the output to 3-5 lines max.
Someone should try to fiddle with the code I indicated in msg144813, and see what can be done. If there are enough informations it might be possible to keep reporting a single line for the aforementioned case, but report more lines for the cases listed in the other messages; if there aren't enough informations we will have to abandon the idea (or find a way to retrieve them).