In Python , a constructor is a special method used to initialize objects of a class. It is automatically called when a new object of the class is created. In Python, a constructor is a special method that is called automatically when an object is created from a class. Its main role is to initialize the object by setting up its attributes or state. In Python , constructors are special methods used to initialize objects when a class is created. We use the __init__ () method to set up default values or pass data when creating an object. Python constructors help us automatically assign values to object properties, so we don’t need to manually set them each time we create an object.