Python creates instance fields automatically, so they do not need to be declared, but good style is to always set any instance fields an object will have in its constructor. Unlike in Java, where this. before a field or method name can be omitted if there is no ambiguity, the self. in Python is always mandatory; otherwise Python will create a local variable instead. For example:

class Book(object):
    def __init__(self, title):
        self.title = title
        self.checked_out = False

Fill in the placeholders so that the actual outputs match the expected outputs.