This has the drawback that the term protocol becomes overloaded with two subtly different meanings: the first is the traditional, well-known but slightly fuzzy concept of protocols such as iterator; the …

In Python, a protocol specifies the methods and attributes that a class must implement to be considered of a given type. Protocols are important in Python’s type hint system, which allows for static type …

In this tutorial, you'll learn about the Python Protocol and its use to define implicit interfaces.

Apr 5, 2025 · In Python, a protocol is an informal interface defined by a set of methods. It doesn't have a strict, formal definition like an interface in languages such as Java or C#. Instead, any class that …

Jul 27, 2023 · Python 3.8 introduced a neat new feature: protocols. Protocols are an alternative to abstract base classes (ABC), and allow structural subtyping – checking whether two classes are …

Jan 28, 2026 · What is the main advantage of using Python protocols? Protocols provide a flexible way to perform static type checking without requiring explicit inheritance or registration, offering the …

Dec 11, 2023 · Protocols in Python are a feature introduced in Python 3.8. Protocols provide a way of closing the gap between type hinting and the runtime type system, allowing us to do structural …

See PEP 544 for the detailed specification of protocols and structural subtyping in Python. The typing module defines various protocol classes that correspond to places where duck typing is commonly …

Jul 5, 2020 · Python 3.8 shipped one of the coolest features I’ve seen in a recent Python version: protocol classes. This feature lets you build interfaces and check that objects satisfy them implicitly, …

Jul 5, 2023 · In Python, protocols refer to a concept introduced in Python 3.8 as a way to define structural typing or "duck typing" within the language. A protocol is a set of methods or attributes that …