Now that list.extend() is at the root of many list operations, it becomes worth it to in-line the call to PyIter_Next().
Now that list.extend() is at the root of many list operations, it becomes
worth it to in-line the call to PyIter_Next().

Saves another 15% on most list operations that acceptable a general
iterable argument (such as the list constructor).

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator