Preliminary implementation of stdlib/3.7/dataclasses.pyi.

Author: gwk

stdlib/3.7/dataclasses.pyi

@@ -0,0 +1,53 @@
+from typing import overload, Any, Callable, Dict, Generic, Iterable, Mapping, Optional, Tuple, Type, TypeVar, Union
+
+
+_T = TypeVar('_T')
+
+_DictType = TypeVar('_DictType', bound=dict)
+_TupleType = TypeVar('_TupleType', bound=tuple)
+
+class _MISSING_TYPE: ...
+
+class _InitVarMeta(type): ...
+
+def asdict(obj: Any, *, dict_factory: _DictType = ...) -> _DictType: ...
+
+def astuple(obj: Any, *, tuple_factory: _TupleType = ...) -> _TupleType: ...
+
+@overload
+def dataclass(_cls: Type[_T]) -> Type[_T]: ...
+
+@overload
+def dataclass(*, init: bool = ..., repr: bool = ..., eq: bool = ..., order: bool = ...,
+    unsafe_hash: bool = ..., frozen: bool = ...) -> Callable[[Type[_T]], Type[_T]]: ...
+
+
+class Field(Generic[_T]):
+    name: str
+    type: Type[_T]
+    default: _T
+    default_factory: Callable[[], _T]
+    repr: bool
+    hash: Optional[bool]
+    init: bool
+    compare: bool
+    metadata: Optional[Mapping[str, Any]]
+
+
+def field(*, default: Union[_T, _MISSING_TYPE] = ..., default_factory: Union[Callable[[], _T], _MISSING_TYPE] = ...,
+    init: bool = ..., repr: bool = ..., hash: Optional[bool] = ..., compare: bool = ...,
+    metadata: Optional[Mapping[str, Any]] = ...) -> Field: ...
+
+def fields(class_or_instance: Type) -> Tuple[Field, ...]: ...
+
+def is_dataclass(obj: Any) -> bool: ...
+
+class FrozenInstanceError(AttributeError): ...
+
+class InitVar(metaclass=_InitVarMeta): ...
+
+def make_dataclass(cls_name: str, fields: Iterable[Union[str, Tuple[str, type], Tuple[str, type, Field]]], *,
+    bases: Tuple[type, ...] = ..., namespace: Dict[str, Any] = ...,
+    init: bool = ..., repr: bool = ..., eq: bool = ..., order: bool = ..., hash: bool = ..., frozen: bool = ...): ...
+
+def replace(obj: _T, **changes: Any) -> _T: ...