diff options
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/library/typing.rst | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst index f4d1b24..642f8c6 100644 --- a/Doc/library/typing.rst +++ b/Doc/library/typing.rst @@ -307,9 +307,10 @@ User defined generic type aliases are also supported. Examples:: def inproduct(v: Vec[T]) -> T: # Same as Iterable[Tuple[T, T]] return sum(x*y for x, y in v) -The metaclass used by :class:`Generic` is a subclass of :class:`abc.ABCMeta`. -A generic class can be an ABC by including abstract methods or properties, -and generic classes can also have ABCs as base classes without a metaclass +.. versionchanged:: 3.7 + :class:`Generic` no longer has a custom metaclass. + +A user-defined generic class can have ABCs as base classes without a metaclass conflict. Generic metaclasses are not supported. The outcome of parameterizing generics is cached, and most types in the typing module are hashable and comparable for equality. |