initial commit

django/db/backends/sqlite3/introspection.pyi

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+from django.db.backends.base.introspection import (
+    FieldInfo,
+    TableInfo,
+)
+from django.db.backends.utils import CursorWrapper
+from django.db.models.fields import CharField
+from django.db.models.fields.related import ForeignKey
+from typing import (
+    Dict,
+    List,
+    Optional,
+    Tuple,
+    Union,
+)
+
+
+def get_field_size(name: str) -> Optional[int]: ...
+
+
+class DatabaseIntrospection:
+    def _get_foreign_key_constraints(
+        self,
+        cursor: CursorWrapper,
+        table_name: str
+    ) -> Dict[str, Dict[str, Union[List[str], bool, Tuple[str, str]]]]: ...
+    def _table_info(
+        self,
+        cursor: CursorWrapper,
+        name: str
+    ) -> List[Dict[str, Union[str, None, int]]]: ...
+    def get_constraints(
+        self,
+        cursor: CursorWrapper,
+        table_name: str
+    ) -> Dict[str, Dict[str, Union[List[str], bool, str, Tuple[str, str]]]]: ...
+    def get_key_columns(
+        self,
+        cursor: CursorWrapper,
+        table_name: str
+    ) -> List[Tuple[str, str, str]]: ...
+    def get_primary_key_column(self, cursor: CursorWrapper, table_name: str) -> str: ...
+    def get_relations(
+        self,
+        cursor: CursorWrapper,
+        table_name: str
+    ) -> Dict[str, Tuple[str, str]]: ...
+    def get_sequences(
+        self,
+        cursor: CursorWrapper,
+        table_name: str,
+        table_fields: List[Union[ForeignKey, CharField]] = ...
+    ) -> List[Dict[str, str]]: ...
+    def get_table_description(
+        self,
+        cursor: CursorWrapper,
+        table_name: str
+    ) -> List[FieldInfo]: ...
+    def get_table_list(
+        self,
+        cursor: CursorWrapper
+    ) -> List[TableInfo]: ...
+
+
+class FlexibleFieldLookupDict:
+    def __getitem__(self, key: str) -> Union[str, Tuple[str, Dict[str, int]]]: ...