Module « typing » Python 3.11.3

Fonction final - module typing

Signature de la fonction final

def final(f) 

Description

help(typing.final)

A decorator to indicate final methods and final classes.

    Use this decorator to indicate to type checkers that the decorated
    method cannot be overridden, and decorated class cannot be subclassed.
    For example:

      class Base:
          @final
          def done(self) -> None:
              ...
      class Sub(Base):
          def done(self) -> None:  # Error reported by type checker
                ...

      @final
      class Leaf:
          ...
      class Other(Leaf):  # Error reported by type checker
          ...

    There is no runtime checking of these properties. The decorator
    sets the ``__final__`` attribute to ``True`` on the decorated object
    to allow runtime introspection.