NumPy Arrays: Why Not Just Use a Python List?

You have been using NumPy arrays since post 17. np.array([1, 2, 3]). np.zeros((3, 4)). np.random.randn(100). You have typed these dozens of times without stopping to ask why. Why not just use a Python list? Lists hold numbers. Lists can be looped over. Lists support indexing. What does NumPy actuall