Remoção pendente no Python 3.17

  • collections.abc:

    • collections.abc.ByteString is scheduled for removal in Python 3.17.

      Use isinstance(obj, collections.abc.Buffer) to test if obj implements the buffer protocol at runtime. For use in type annotations, either use Buffer or a union that explicitly specifies the types your code supports (e.g., bytes | bytearray | memoryview).

      ByteString was originally intended to be an abstract class that would serve as a supertype of both bytes and bytearray. However, since the ABC never had any methods, knowing that an object was an instance of ByteString never actually told you anything useful about the object. Other common buffer types such as memoryview were also never understood as subtypes of ByteString (either at runtime or by static type checkers).

      See PEP 688 for more details. (Contributed by Shantanu Jain in gh-91896.)

  • typing:

    • Antes do Python 3.14, as uniões antigas eram implementadas usando a classe privada typing._UnionGenericAlias. Essa classe não é mais necessária para a implementação, mas foi mantida para compatibilidade com versões anteriores, com remoção prevista para o Python 3.17. Os usuários devem usar auxiliares de introspecção documentados, como typing.get_origin() e typing.get_args(), em vez de depender de detalhes de implementação privada.

    • typing.ByteString, deprecated since Python 3.9, is scheduled for removal in Python 3.17.

      Use isinstance(obj, collections.abc.Buffer) to test if obj implements the buffer protocol at runtime. For use in type annotations, either use Buffer or a union that explicitly specifies the types your code supports (e.g., bytes | bytearray | memoryview).

      ByteString was originally intended to be an abstract class that would serve as a supertype of both bytes and bytearray. However, since the ABC never had any methods, knowing that an object was an instance of ByteString never actually told you anything useful about the object. Other common buffer types such as memoryview were also never understood as subtypes of ByteString (either at runtime or by static type checkers).

      See PEP 688 for more details. (Contributed by Shantanu Jain in gh-91896.)