Web Reference: The typing.final decorator is used to restrict the use of inheritance and overriding. A type checker should prohibit any class decorated with @final from being subclassed and any method decorated with @final from being overridden in a subclass. Jul 24, 2024 · In Python 3.8 the Python type hinting feature (embodied by the typing module) will support marking names as final. This is documented in PEP 591 – Adding a final qualifier to typing. 19.10.16. Final Class Since Python 3.8: PEP 591 -- Adding a final qualifier to typing There is no runtime checking of these properties The following code demonstrates how to use @final decorator to mark class as final: from typing import final @final class User: pass class Admin(User): # error pass
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