>>> class NoRepr:
	def __repr__(self):
		raise ValueError
>>> NoRepr()
Traceback (most recent call last):
  File "<pyshell#44>", line 1, in <module>
    NoRepr()
  File "C:\Program Files\Python37\lib\idlelib\rpc.py", line 617, in displayhook
    text = repr(value)
  File "<pyshell#43>", line 3, in __repr__
    raise ValueError
ValueError

What should happen in this case isn't exactly clear, but the current traceback is wrong in multiple ways.