Implementing a perceptron learning algorithm in Python
In the previous section, we learned how Rosenblatt’s perceptron rule works; let’s now implement it in Python and apply it to the Iris dataset that we introduced in Chapter 1, Giving Computers the Ability to Learn from Data.
An object-oriented perceptron API
We will take an object-oriented approach to defining the perceptron interface as a Python class, which will allow us to initialize new Perceptron objects that can learn from data via a fit method and make predictions via a separate predict method. As a convention, we append an underscore (_) to attributes that are not created upon the initialization of the object, but we do this by calling the object’s other methods, for example, self.w_.
