What is Callable Class?
In Python, a callable is anything that can be called. For example, functions, methods, classes, and objects are callable. You can call them like a function. In this article, I will explain how to create callable classes in Python. You can call an instance of a class like a function. It is really useful when you want to create a class that behaves like a function.
How to Create Callable Class?
To create a callable class, you need to define the __call__ method in the class. This method will be called when you call an instance of the class. Here is an example:
class Adder:
def __init__(self, x):
self.x = x
def __call__(self, y):
return self.x + y
adder = Adder(10)
result = adder(20)
print(result) # Output: 30
In this example, we defined the Adder class with the __call__ method. This method takes a parameter y and returns the sum of x and y. When we create an instance of the Adder class and call it with a parameter, the __call__ method will be called.
Conclusion
In this article, I explained how to create callable classes in Python. You can call an instance of a class like a function by defining the __call__ method in the class. It is really useful when you want to create a class that behaves like a function. If you have any questions, feel free to ask.
Happy coding! 🐍