$ python iterator_test.py 463 926 1389 1852 Let’s take a look at what’s going on. We made our own class and defined a __next__ method, which returns a new iteration every time it’s called.

Here’s an example of a Cython function declaration that takes in a two-dimensional NumPy array: def compute(int[:, ::1] array_1): In Cython’s “pure Python” syntax, you’d use this annotation: ...