What are some advanced usages of mypy annotations?
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What are some advanced usages of mypy annotations?
Advanced usages of mypy annotations include using TypeVars, Protocols, and TypedDicts for more complex type definitions.
Can you explain how to use TypeVars in mypy?
TypeVars allow you to create generic types. For example, you can define a function that works with any type by using TypeVar.
What about Protocols? How do they differ from regular classes?
Protocols define a set of methods that a class must implement, allowing for structural subtyping, unlike regular classes that require inheritance.
Can you give an example of using TypedDict?
Sure! TypedDict allows you to define a dictionary with a specific structure. For instance, you can define a dictionary for a user with 'name' and 'age' keys.
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