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from collections.abc import Iterable, Iterator, Mapping
from typing import Any, Literal
from django.contrib.contenttypes.fields import GenericForeignKey
from django.core import validators # due to weird mypy.stubtest error
from django.db.models import NOT_PROVIDED, Field
from django.db.models.base import Model
from django.db.models.fields.reverse_related import ForeignObjectRel
from django.utils.choices import _ChoicesInput
from django.utils.functional import _StrOrPromise, cached_property
class AttributeSetter:
def __init__(self, name: str, value: Any) -> None: ...
class CompositeAttribute:
field: CompositePrimaryKey
def __init__(self, field: CompositePrimaryKey) -> None: ...
@property
def attnames(self) -> list[str]: ...
def __get__(self, instance: Model, cls: type[Model] | None = None) -> tuple[Any, ...]: ...
def __set__(self, instance: Model, values: list[Any] | tuple[Any] | None) -> None: ...
class CompositePrimaryKey(Field):
field_names: tuple[str]
descriptor_class: type[CompositeAttribute]
def __init__(
self,
*args: str,
verbose_name: _StrOrPromise | None = None,
name: str | None = None,
primary_key: Literal[True] = True,
max_length: int | None = None,
unique: bool = False,
blank: Literal[True] = True,
null: bool = False,
db_index: bool = False,
rel: ForeignObjectRel | None = None,
default: type[NOT_PROVIDED] = ...,
editable: Literal[False] = False,
serialize: bool = True,
unique_for_date: str | None = None,
unique_for_month: str | None = None,
unique_for_year: str | None = None,
choices: _ChoicesInput | None = None,
help_text: _StrOrPromise = "",
db_column: None = None,
db_tablespace: str | None = None,
auto_created: bool = False,
validators: Iterable[validators._ValidatorCallable] = (),
error_messages: Mapping[str, _StrOrPromise] | None = None,
db_comment: str | None = None,
db_default: type[NOT_PROVIDED] = ...,
) -> None: ...
@cached_property
def fields(
self,
) -> tuple[Field | ForeignObjectRel | GenericForeignKey, ...]: ...
@cached_property
def columns(self) -> tuple[str, ...]: ...
def __iter__(self) -> Iterator[Field | ForeignObjectRel | GenericForeignKey]: ...
def __len__(self) -> int: ...
def get_pk_value_on_save(self, instance: Model) -> tuple: ... # actual type is tuple of field.value_from_object
def unnest(fields: Iterable[Field[Any, Any]]) -> list[Field[Any, Any]]: ...
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