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: ...

$ python iterator_test.py 463 926 1389 1852 2315 2778 It’s ... Wow, that’s a lot shorter than our iterator example. The main thing to note is a new keyword: yield.

Python 3.14 has a new feature called the template string, or t-string, type. A t-string superficially resembles an f-string, but it’s designed to do something very different.