On 5/10/2021 6:07 AM, Steven D'Aprano wrote:
On Mon, May 10, 2021 at 05:34:12AM -0400, Terry Reedy wrote:
On 5/10/2021 3:28 AM, M.-A. Lemburg wrote:
I'm mostly thinking of tracebacks which go >10 levels deep, which is rather common in larger applications. For those tracebacks, the top entries are mostly noise you never look at when debugging. The proposal now adds another 10 extra lines to jump over :-)
If the slice were instead marked with color tagging, as I hope will be possible in IDLE and other IDEs, then no extra lines well be needed
That's great for people using IDLE, but for those using the vanilla Python interpreter, M-A.L makes a good point about increasing the vertical size of the traceback which will almost always be ignored.
The vanilla interpreter could be updated to recognize when it is running on a similated 35-year-old terminal that implements ansi-vt100 color codes rather than a similated 40+-year-old black-and-white teletype-like terminal. Making the enhancement available to nonstandard python-coded interfaces is a separate issue.
Its especially the case for beginners. Its hard enough to get newbies to read *any* of the traceback. Anything which increases the visual noise of that is going to make it harder.
-- Terry Jan Reedy