Nope, it was Python.

http://www.cosc.canterbury.ac.nz/greg.ewing/python/Pyrex/version/Doc/Manual/special_methods.html

The __next__ method

Extension types wishing to implement the iterator interface should define a method called __next__, not next. The Python system will automatically supply a next method which calls your__next__. Do NOT explicitly give your type a next method, or bad things could happen.

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