boundmethod
nounA bound method is a function that already knows which object it belongs to.
When you call the bound method on the dog object, it already knows which dog to bark for.
OTHER MEANINGS
2. In Python, a method object created by accessing a function attribute on an instance, carrying both the function and the instance.
The expression dog.bark returns a bound method that wraps the bark function and the dog instance.
3. A method whose receiver is fixed at creation time, so it can be called without passing the object again.
The event handler stored a bound method so the button click automatically passed the right window.
4. A callable that combines a function with a specific set of arguments or a specific target object.
She saved a bound method as a callback so the logger always wrote to the correct file.