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* Add unittests for iterators that report their length

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* Document the differences between them
* Fix corner cases covered by the unittests
* Use Py_RETURN_NONE where possible for dictionaries
This commit is contained in:
Raymond Hettinger 2004-04-12 18:10:01 +00:00
parent 45d0b5cc44
commit 7892b1c651
5 changed files with 276 additions and 10 deletions
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12
Objects/iterobject.c
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@ -74,8 +74,16 @@ iter_iternext(PyObject *iterator)
static int
iter_len(seqiterobject *it)
{
if (it->it_seq)
return PyObject_Size(it->it_seq) - it->it_index;
int seqsize, len;
if (it->it_seq) {
seqsize = PySequence_Size(it->it_seq);
if (seqsize == -1)
return -1;
len = seqsize - it->it_index;
if (len >= 0)
return len;
}
return 0;
}