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Diffstat (limited to 'Doc/library/typing.rst')
| -rw-r--r-- | Doc/library/typing.rst | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst index de03284..fad9dc6 100644 --- a/Doc/library/typing.rst +++ b/Doc/library/typing.rst @@ -838,10 +838,11 @@ The module defines the following classes, functions and decorators: Fields with a default value must come after any fields without a default. - The resulting class has two extra attributes: ``_field_types``, - giving a dict mapping field names to types, and ``_field_defaults``, a dict - mapping field names to default values. (The field names are in the - ``_fields`` attribute, which is part of the namedtuple API.) + The resulting class has an extra attribute ``__annotations__`` giving a + dict that maps the field names to the field types. (The field names are in + the ``_fields`` attribute and the default values are in the + ``_field_defaults`` attribute both of which are part of the namedtuple + API.) ``NamedTuple`` subclasses can also have docstrings and methods:: @@ -863,6 +864,15 @@ The module defines the following classes, functions and decorators: .. versionchanged:: 3.6.1 Added support for default values, methods, and docstrings. + .. versionchanged:: 3.8 + Deprecated the ``_field_types`` attribute in favor of the more + standard ``__annotations__`` attribute which has the same information. + + .. versionchanged:: 3.8 + The ``_field_types`` and ``__annotations__`` attributes are + now regular dictionaries instead of instances of ``OrderedDict``. + + .. function:: NewType(typ) A helper function to indicate a distinct types to a typechecker, |