[Python-Dev] The repr of a sentinel

Following a recent change, we now have in traceback.py: _sentinel = object() def print_exception(exc, /, value=_sentinel, tb=_sentinel, limit=None, file=None, chain=True): So now: >>> import traceback >>> help(traceback.print_exception) Help on function print_exception in module traceback: print_exception(exc, /, value=