Functional Behavior of an Object

In the beginning of this chapter, we covered in detail that functions are objects, but the reverse isn’t true. Not every object is a function, but Python allows us to use callable objects. It means that an object can behave like a function. Let us dive into the details to see how this is possible.

Callable objects

The callable objects are the objects that can be called like a function (using ()), and can be passed as an argument in a function call. This is made possible with the __call__ method. Look at the following example to see how to define a callable object.