Here’s a simple example: import numpy as np ... As noted above, NumPy arrays behave a lot like other Python objects, for the sake of convenience. For instance, they can be indexed like lists ...

so that Cython knows how to interpret the argument as a NumPy array (fast) rather than a generic Python object (slow). Here’s an example of a Cython function declaration that takes in a two ...

For example, when you put Serial in a program, you use an object someone else wrote. Python — and things like Micropython — have the same kind of division. Python started as a scripting ...