Module « typing » Python 3.11.3

Classe « NewType »

Informations générales

Héritage

builtins.object
    NewType

Définition

class NewType(builtins.object):

help(NewType)

NewType creates simple unique types with almost zero
    runtime overhead. NewType(name, tp) is considered a subtype of tp
    by static type checkers. At runtime, NewType(name, tp) returns
    a dummy callable that simply returns its argument. Usage::

        UserId = NewType('UserId', int)

        def name_by_id(user_id: UserId) -> str:
            ...

        UserId('user')          # Fails type check

        name_by_id(42)          # Fails type check
        name_by_id(UserId(42))  # OK

        num = UserId(5) + 1     # type: int
    

Constructeur(s)

Signature du constructeur	Description
__init__(self, name, tp)

Opérateurs hérités de la classe object

__eq__, __ge__, __gt__, __le__, __lt__, __ne__

Méthodes héritées de la classe object

__delattr__, __dir__, __format__, __getattribute__, __getstate__, __hash__, __init_subclass__, __reduce_ex__, __setattr__, __sizeof__, __str__, __subclasshook__