Daniel Stutzbach <dan...@stutzbachenterprises.com> added the comment:
Thank you for the patch.
We should only iterate over the shorter set if the longer set is really a set
and not just a sequence. PySequence_Contains may take O(n) time on a list,
making the algorithm an expensive O(n**2) overall. I note that set_isdisjoint
doesn't try to examine the lengths.
Also, since PyIter_Next returns NULL to indicate the end of the iteration OR to
indicate an exception, the end of the function should look like this:
Py_DECREF(it);
if (PyErr_Occurred())
return NULL;
Py_RETURN_TRUE;
Other than those two issues, the patch looks good to me.
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue9212>
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