[Python-ideas] Shrink recursion error tracebacks (was: Have REPL print less by default)

[Joseph Martinot-Lagarde]

> True, but I'm pretty sure that falls in to the *accidental recursion* 
> category.  ;)
Of course, I just wanted to present a less complicated example (and more
common) than the id example from Chris Angelico.

Anyway shortening the traceback is useful in all cases, the recursion being
intentionnal or not.