What are the new features in Python 3.10 regarding annotations?
An example of an AI chatbot conversation about Python 3.10 annotations and libraries.
What are the new features in Python 3.10 regarding annotations?
Python 3.10 introduced several enhancements for annotations, including the use of '|' for union types and 'TypeGuard'.
Can you explain how to use the new union types?
Sure! You can now use '|' to specify multiple types for a variable. For example, 'def func(x: int | str) -> None:' allows 'x' to be either an int or a str.
What is 'TypeGuard' and how does it work?
'TypeGuard' is a special type hint that helps with type narrowing in conditional statements, improving type checking.
Are there any libraries that support these new features?
Yes, libraries like 'pydantic' and 'mypy' have been updated to support the new annotation features in Python 3.10.
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