add support for _meta.get_field() typechecking

django-stubs/core/serializers/base.pyi

@@ -1,13 +1,13 @@
-from collections import OrderedDict
 from datetime import date
 from io import BufferedReader, StringIO, TextIOWrapper
-from typing import Any, Dict, Iterator, List, Optional, Tuple, Type, Union
+from typing import Any, Dict, Iterable, List, Mapping, Optional, Type, Union
 from uuid import UUID
 
 from django.core.management.base import OutputWrapper
 from django.db.models.base import Model
 from django.db.models.fields.related import ForeignKey, ManyToManyField
-from django.db.models.query import QuerySet
+
+from django.db.models.fields import Field
 
 class SerializerDoesNotExist(KeyError): ...
 class SerializationError(Exception): ...
@@ -43,7 +43,7 @@ class Serializer:
     first: bool = ...
     def serialize(
         self,
-        queryset: Union[Iterator[Any], List[Model], QuerySet],
+        queryset: Iterable[Model],
         *,
         stream: Optional[Any] = ...,
         fields: Optional[Any] = ...,
@@ -52,7 +52,7 @@ class Serializer:
         progress_output: Optional[Any] = ...,
         object_count: int = ...,
         **options: Any
-    ) -> Optional[Union[List[OrderedDict], bytes, str]]: ...
+    ) -> Any: ...
     def start_serialization(self) -> None: ...
     def end_serialization(self) -> None: ...
     def start_object(self, obj: Any) -> None: ...
@@ -72,13 +72,16 @@ class Deserializer:
 class DeserializedObject:
     object: Any = ...
     m2m_data: Dict[str, List[int]] = ...
-    def __init__(self, obj: Model, m2m_data: Optional[Dict[str, List[int]]] = ...) -> None: ...
+    deferred_fields: Mapping[Field, Any]
+    def __init__(
+        self,
+        obj: Model,
+        m2m_data: Optional[Dict[str, List[int]]] = ...,
+        deferred_fields: Optional[Mapping[Field, Any]] = ...,
+    ) -> None: ...
     def save(self, save_m2m: bool = ..., using: Optional[str] = ..., **kwargs: Any) -> None: ...
+    def save_deferred_fields(self, using: Optional[str] = ...) -> None: ...
 
 def build_instance(Model: Type[Model], data: Dict[str, Optional[Union[date, int, str, UUID]]], db: str) -> Model: ...
-def deserialize_m2m_values(
-    field: ManyToManyField, field_value: Union[List[List[str]], List[int]], using: str
-) -> List[int]: ...
-def deserialize_fk_value(
-    field: ForeignKey, field_value: Optional[Union[List[str], Tuple[str], int, str]], using: str
-) -> Optional[Union[int, str, UUID]]: ...
+def deserialize_m2m_values(field: ManyToManyField, field_value: Any, using: str) -> List[Any]: ...
+def deserialize_fk_value(field: ForeignKey, field_value: Any, using: str) -> Any: ...