How to create a generator/iterator with the Python C API?

Question

How do I replicate the following Python code with the Python C API?

class Sequence():
    def __init__(self, max):
        self.max = max
    def data(self):
         


        

Answer 1

In Sequence_data, you must either return a new PyInt instance or throw a StopIteration exception which tells the code outside that there are no more values. See PEP 255 for details and 9.10 Generators.

See Iterator Protocol for helper functions in the Python/C API.