def f():
    raise StopIteration

def g():
    yield f()

next(g())

expected_output = """
Traceback (most recent call last):
  File "stopiter.py", line 5, in g
    yield f()
  File "stopiter.py", line 2, in f
    raise StopIteration
StopIteration

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "stopiter.py", line 7, in <module>
    next(g())
RuntimeError: generator raised StopIteration
"""