Arnaud Delobelle <arno...@googlemail.com> writes:
> What about
> foo = iter('')
That doesn't return a generator.
>>> foo = iter('')
>>> foo
<listiterator object at 0xf7cd3ed0>
Whether the OP needs to create a generator, or just any iterable type,
isn't clear.
Robert Kern <robert.k...@gmail.com> writes:
> He doesn't want *any* empty generator. He wants an iterator that
> executes some given side-effect-producing code then immediately raises
> the StopIteration.
Ah, hm. That's a rather perverse use case, but I'm sure the OP has their
reasons. It's going to confuse a reader who isn't expecting it, no
matter how simply it's done.
So, I think the best answer is what has already been suggested, but that
it's perverse enough that the hack *needs* a comment to say why it's
being done.
def make_empty_generator_with_side_effect():
""" Make a generator that does important work, but is empty. """
# Do the important work here.
spam = object()
# Make this function return an empty generator.
if False: yield
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Ben Finney
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