What are the differences between typing extensions and typing in Python?
An example of an AI chatbot conversation about typing extensions vs typing in Python.
What are the differences between typing extensions and typing in Python?
Typing in Python provides basic type hints, while typing extensions offer additional features like TypedDict and Protocol.
Can you give me an example of using TypedDict?
Sure! A TypedDict allows you to define a dictionary with a specific structure. For example: from typing import TypedDict; class Movie(TypedDict): title: str; year: int.
What about Protocol? How is it used?
A Protocol defines a set of methods and properties that a class must implement. It's useful for structural subtyping.
Are there any performance implications when using typing extensions?
Generally, typing extensions do not impact runtime performance, as they are mainly for static type checking.
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