You can simply import numpy as before and use all of NumPy’s functionality. However, to get the best possible results, you’ll want to use proper type annotations on your code .

Python stores the data in its appropriate data representation and memory space. However, packages such as NumPy are implemented in systems programming languages such as C, Rust or Fortran. These ...

When you call the Cython function in your Python code, send the entire NumPy array object as an argument for that function call. Perform all the iteration over the object in Cython .