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- import sys
- from typing import (
- Any,
- Callable,
- Dict,
- Generic,
- List,
- Mapping,
- Optional,
- Sequence,
- Tuple,
- Type,
- TypeVar,
- Union,
- overload,
- )
- # `import X as X` is required to make these public
- from . import converters as converters
- from . import exceptions as exceptions
- from . import filters as filters
- from . import setters as setters
- from . import validators as validators
- from ._version_info import VersionInfo
- __version__: str
- __version_info__: VersionInfo
- __title__: str
- __description__: str
- __url__: str
- __uri__: str
- __author__: str
- __email__: str
- __license__: str
- __copyright__: str
- _T = TypeVar("_T")
- _C = TypeVar("_C", bound=type)
- _EqOrderType = Union[bool, Callable[[Any], Any]]
- _ValidatorType = Callable[[Any, Attribute[_T], _T], Any]
- _ConverterType = Callable[[Any], Any]
- _FilterType = Callable[[Attribute[_T], _T], bool]
- _ReprType = Callable[[Any], str]
- _ReprArgType = Union[bool, _ReprType]
- _OnSetAttrType = Callable[[Any, Attribute[Any], Any], Any]
- _OnSetAttrArgType = Union[
- _OnSetAttrType, List[_OnSetAttrType], setters._NoOpType
- ]
- _FieldTransformer = Callable[[type, List[Attribute[Any]]], List[Attribute[Any]]]
- # FIXME: in reality, if multiple validators are passed they must be in a list
- # or tuple, but those are invariant and so would prevent subtypes of
- # _ValidatorType from working when passed in a list or tuple.
- _ValidatorArgType = Union[_ValidatorType[_T], Sequence[_ValidatorType[_T]]]
- # _make --
- NOTHING: object
- # NOTE: Factory lies about its return type to make this possible:
- # `x: List[int] # = Factory(list)`
- # Work around mypy issue #4554 in the common case by using an overload.
- if sys.version_info >= (3, 8):
- from typing import Literal
- @overload
- def Factory(factory: Callable[[], _T]) -> _T: ...
- @overload
- def Factory(
- factory: Callable[[Any], _T],
- takes_self: Literal[True],
- ) -> _T: ...
- @overload
- def Factory(
- factory: Callable[[], _T],
- takes_self: Literal[False],
- ) -> _T: ...
- else:
- @overload
- def Factory(factory: Callable[[], _T]) -> _T: ...
- @overload
- def Factory(
- factory: Union[Callable[[Any], _T], Callable[[], _T]],
- takes_self: bool = ...,
- ) -> _T: ...
- # Static type inference support via __dataclass_transform__ implemented as per:
- # https://github.com/microsoft/pyright/blob/1.1.135/specs/dataclass_transforms.md
- # This annotation must be applied to all overloads of "define" and "attrs"
- #
- # NOTE: This is a typing construct and does not exist at runtime. Extensions
- # wrapping attrs decorators should declare a separate __dataclass_transform__
- # signature in the extension module using the specification linked above to
- # provide pyright support.
- def __dataclass_transform__(
- *,
- eq_default: bool = True,
- order_default: bool = False,
- kw_only_default: bool = False,
- field_descriptors: Tuple[Union[type, Callable[..., Any]], ...] = (()),
- ) -> Callable[[_T], _T]: ...
- class Attribute(Generic[_T]):
- name: str
- default: Optional[_T]
- validator: Optional[_ValidatorType[_T]]
- repr: _ReprArgType
- cmp: _EqOrderType
- eq: _EqOrderType
- order: _EqOrderType
- hash: Optional[bool]
- init: bool
- converter: Optional[_ConverterType]
- metadata: Dict[Any, Any]
- type: Optional[Type[_T]]
- kw_only: bool
- on_setattr: _OnSetAttrType
- def evolve(self, **changes: Any) -> "Attribute[Any]": ...
- # NOTE: We had several choices for the annotation to use for type arg:
- # 1) Type[_T]
- # - Pros: Handles simple cases correctly
- # - Cons: Might produce less informative errors in the case of conflicting
- # TypeVars e.g. `attr.ib(default='bad', type=int)`
- # 2) Callable[..., _T]
- # - Pros: Better error messages than #1 for conflicting TypeVars
- # - Cons: Terrible error messages for validator checks.
- # e.g. attr.ib(type=int, validator=validate_str)
- # -> error: Cannot infer function type argument
- # 3) type (and do all of the work in the mypy plugin)
- # - Pros: Simple here, and we could customize the plugin with our own errors.
- # - Cons: Would need to write mypy plugin code to handle all the cases.
- # We chose option #1.
- # `attr` lies about its return type to make the following possible:
- # attr() -> Any
- # attr(8) -> int
- # attr(validator=<some callable>) -> Whatever the callable expects.
- # This makes this type of assignments possible:
- # x: int = attr(8)
- #
- # This form catches explicit None or no default but with no other arguments
- # returns Any.
- @overload
- def attrib(
- default: None = ...,
- validator: None = ...,
- repr: _ReprArgType = ...,
- cmp: Optional[_EqOrderType] = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- metadata: Optional[Mapping[Any, Any]] = ...,
- type: None = ...,
- converter: None = ...,
- factory: None = ...,
- kw_only: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- ) -> Any: ...
- # This form catches an explicit None or no default and infers the type from the
- # other arguments.
- @overload
- def attrib(
- default: None = ...,
- validator: Optional[_ValidatorArgType[_T]] = ...,
- repr: _ReprArgType = ...,
- cmp: Optional[_EqOrderType] = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- metadata: Optional[Mapping[Any, Any]] = ...,
- type: Optional[Type[_T]] = ...,
- converter: Optional[_ConverterType] = ...,
- factory: Optional[Callable[[], _T]] = ...,
- kw_only: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- ) -> _T: ...
- # This form catches an explicit default argument.
- @overload
- def attrib(
- default: _T,
- validator: Optional[_ValidatorArgType[_T]] = ...,
- repr: _ReprArgType = ...,
- cmp: Optional[_EqOrderType] = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- metadata: Optional[Mapping[Any, Any]] = ...,
- type: Optional[Type[_T]] = ...,
- converter: Optional[_ConverterType] = ...,
- factory: Optional[Callable[[], _T]] = ...,
- kw_only: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- ) -> _T: ...
- # This form covers type=non-Type: e.g. forward references (str), Any
- @overload
- def attrib(
- default: Optional[_T] = ...,
- validator: Optional[_ValidatorArgType[_T]] = ...,
- repr: _ReprArgType = ...,
- cmp: Optional[_EqOrderType] = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- metadata: Optional[Mapping[Any, Any]] = ...,
- type: object = ...,
- converter: Optional[_ConverterType] = ...,
- factory: Optional[Callable[[], _T]] = ...,
- kw_only: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- ) -> Any: ...
- @overload
- def field(
- *,
- default: None = ...,
- validator: None = ...,
- repr: _ReprArgType = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- metadata: Optional[Mapping[Any, Any]] = ...,
- converter: None = ...,
- factory: None = ...,
- kw_only: bool = ...,
- eq: Optional[bool] = ...,
- order: Optional[bool] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- ) -> Any: ...
- # This form catches an explicit None or no default and infers the type from the
- # other arguments.
- @overload
- def field(
- *,
- default: None = ...,
- validator: Optional[_ValidatorArgType[_T]] = ...,
- repr: _ReprArgType = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- metadata: Optional[Mapping[Any, Any]] = ...,
- converter: Optional[_ConverterType] = ...,
- factory: Optional[Callable[[], _T]] = ...,
- kw_only: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- ) -> _T: ...
- # This form catches an explicit default argument.
- @overload
- def field(
- *,
- default: _T,
- validator: Optional[_ValidatorArgType[_T]] = ...,
- repr: _ReprArgType = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- metadata: Optional[Mapping[Any, Any]] = ...,
- converter: Optional[_ConverterType] = ...,
- factory: Optional[Callable[[], _T]] = ...,
- kw_only: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- ) -> _T: ...
- # This form covers type=non-Type: e.g. forward references (str), Any
- @overload
- def field(
- *,
- default: Optional[_T] = ...,
- validator: Optional[_ValidatorArgType[_T]] = ...,
- repr: _ReprArgType = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- metadata: Optional[Mapping[Any, Any]] = ...,
- converter: Optional[_ConverterType] = ...,
- factory: Optional[Callable[[], _T]] = ...,
- kw_only: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- ) -> Any: ...
- @overload
- @__dataclass_transform__(order_default=True, field_descriptors=(attrib, field))
- def attrs(
- maybe_cls: _C,
- these: Optional[Dict[str, Any]] = ...,
- repr_ns: Optional[str] = ...,
- repr: bool = ...,
- cmp: Optional[_EqOrderType] = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- slots: bool = ...,
- frozen: bool = ...,
- weakref_slot: bool = ...,
- str: bool = ...,
- auto_attribs: bool = ...,
- kw_only: bool = ...,
- cache_hash: bool = ...,
- auto_exc: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- auto_detect: bool = ...,
- collect_by_mro: bool = ...,
- getstate_setstate: Optional[bool] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- field_transformer: Optional[_FieldTransformer] = ...,
- ) -> _C: ...
- @overload
- @__dataclass_transform__(order_default=True, field_descriptors=(attrib, field))
- def attrs(
- maybe_cls: None = ...,
- these: Optional[Dict[str, Any]] = ...,
- repr_ns: Optional[str] = ...,
- repr: bool = ...,
- cmp: Optional[_EqOrderType] = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- slots: bool = ...,
- frozen: bool = ...,
- weakref_slot: bool = ...,
- str: bool = ...,
- auto_attribs: bool = ...,
- kw_only: bool = ...,
- cache_hash: bool = ...,
- auto_exc: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- auto_detect: bool = ...,
- collect_by_mro: bool = ...,
- getstate_setstate: Optional[bool] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- field_transformer: Optional[_FieldTransformer] = ...,
- ) -> Callable[[_C], _C]: ...
- @overload
- @__dataclass_transform__(field_descriptors=(attrib, field))
- def define(
- maybe_cls: _C,
- *,
- these: Optional[Dict[str, Any]] = ...,
- repr: bool = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- slots: bool = ...,
- frozen: bool = ...,
- weakref_slot: bool = ...,
- str: bool = ...,
- auto_attribs: bool = ...,
- kw_only: bool = ...,
- cache_hash: bool = ...,
- auto_exc: bool = ...,
- eq: Optional[bool] = ...,
- order: Optional[bool] = ...,
- auto_detect: bool = ...,
- getstate_setstate: Optional[bool] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- field_transformer: Optional[_FieldTransformer] = ...,
- ) -> _C: ...
- @overload
- @__dataclass_transform__(field_descriptors=(attrib, field))
- def define(
- maybe_cls: None = ...,
- *,
- these: Optional[Dict[str, Any]] = ...,
- repr: bool = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- slots: bool = ...,
- frozen: bool = ...,
- weakref_slot: bool = ...,
- str: bool = ...,
- auto_attribs: bool = ...,
- kw_only: bool = ...,
- cache_hash: bool = ...,
- auto_exc: bool = ...,
- eq: Optional[bool] = ...,
- order: Optional[bool] = ...,
- auto_detect: bool = ...,
- getstate_setstate: Optional[bool] = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- field_transformer: Optional[_FieldTransformer] = ...,
- ) -> Callable[[_C], _C]: ...
- mutable = define
- frozen = define # they differ only in their defaults
- # TODO: add support for returning NamedTuple from the mypy plugin
- class _Fields(Tuple[Attribute[Any], ...]):
- def __getattr__(self, name: str) -> Attribute[Any]: ...
- def fields(cls: type) -> _Fields: ...
- def fields_dict(cls: type) -> Dict[str, Attribute[Any]]: ...
- def validate(inst: Any) -> None: ...
- def resolve_types(
- cls: _C,
- globalns: Optional[Dict[str, Any]] = ...,
- localns: Optional[Dict[str, Any]] = ...,
- attribs: Optional[List[Attribute[Any]]] = ...,
- ) -> _C: ...
- # TODO: add support for returning a proper attrs class from the mypy plugin
- # we use Any instead of _CountingAttr so that e.g. `make_class('Foo',
- # [attr.ib()])` is valid
- def make_class(
- name: str,
- attrs: Union[List[str], Tuple[str, ...], Dict[str, Any]],
- bases: Tuple[type, ...] = ...,
- repr_ns: Optional[str] = ...,
- repr: bool = ...,
- cmp: Optional[_EqOrderType] = ...,
- hash: Optional[bool] = ...,
- init: bool = ...,
- slots: bool = ...,
- frozen: bool = ...,
- weakref_slot: bool = ...,
- str: bool = ...,
- auto_attribs: bool = ...,
- kw_only: bool = ...,
- cache_hash: bool = ...,
- auto_exc: bool = ...,
- eq: Optional[_EqOrderType] = ...,
- order: Optional[_EqOrderType] = ...,
- collect_by_mro: bool = ...,
- on_setattr: Optional[_OnSetAttrArgType] = ...,
- field_transformer: Optional[_FieldTransformer] = ...,
- ) -> type: ...
- # _funcs --
- # TODO: add support for returning TypedDict from the mypy plugin
- # FIXME: asdict/astuple do not honor their factory args. Waiting on one of
- # these:
- # https://github.com/python/mypy/issues/4236
- # https://github.com/python/typing/issues/253
- def asdict(
- inst: Any,
- recurse: bool = ...,
- filter: Optional[_FilterType[Any]] = ...,
- dict_factory: Type[Mapping[Any, Any]] = ...,
- retain_collection_types: bool = ...,
- value_serializer: Optional[Callable[[type, Attribute[Any], Any], Any]] = ...,
- ) -> Dict[str, Any]: ...
- # TODO: add support for returning NamedTuple from the mypy plugin
- def astuple(
- inst: Any,
- recurse: bool = ...,
- filter: Optional[_FilterType[Any]] = ...,
- tuple_factory: Type[Sequence[Any]] = ...,
- retain_collection_types: bool = ...,
- ) -> Tuple[Any, ...]: ...
- def has(cls: type) -> bool: ...
- def assoc(inst: _T, **changes: Any) -> _T: ...
- def evolve(inst: _T, **changes: Any) -> _T: ...
- # _config --
- def set_run_validators(run: bool) -> None: ...
- def get_run_validators() -> bool: ...
- # aliases --
- s = attributes = attrs
- ib = attr = attrib
- dataclass = attrs # Technically, partial(attrs, auto_attribs=True) ;)
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