error return without exception set

[Peter Otten]

Will McGugan wrote:

> Can anyone suggest a likely cause for the following exception...
> 
> Exception exceptions.SystemError: 'error return without exception set'
> in <generator object at 0x0345CF30> ignored

The "Exception ... ignored" part is probably caused by an exception in a
finally block during garbage collection:

>>> def f():
...     try:
...             yield 42
...     finally:
...             1/0
...
>>> g = f()
>>> g.next()
42
>>> del g
Exception exceptions.ZeroDivisionError: 'integer division or modulo by zero'
in <generator object at 0x401d2fec> ignored

The "error return without exception set" part looks like a failed
consistency check in ceval.c -- perhaps caused by a broken extension
written in C. 

But you'd have to give some more context.

Peter