The functools.singledispatch decorator allows different modules to contribute to the overall solution, and lets you easily provide specialized functions even for types that belong to third-party packages that you can’t edit. If you decorate a plain function with @singledispatch, it becomes the entry point for a generic function: a group of functions to perform the same operation in different ways, depending on the type of the first argument. This is what is meant by the term single dispatch. If more arguments were used to select the specific functions, we’d have multiple dispatch.
