Fix types for sessions (#1173)

Co-authored-by: Adam Johnson <[email protected]>

Author: ljodal

django-stubs/contrib/sessions/backends/base.pyi

@@ -24,14 +24,14 @@ class SessionBase(Dict[str, Any]):
     def items(self) -> Any: ...
     def clear(self) -> None: ...
     def is_empty(self) -> bool: ...
-    def _get_session_key(self) -> str: ...
-    def _set_session_key(self, value: str) -> None: ...
+    def _get_session_key(self) -> Optional[str]: ...
+    def _set_session_key(self, value: Optional[str]) -> None: ...
     @property
-    def session_key(self) -> str: ...
+    def session_key(self) -> Optional[str]: ...
     @property
-    def _session_key(self) -> str: ...
+    def _session_key(self) -> Optional[str]: ...
     @_session_key.setter
-    def _session_key(self, value: str) -> None: ...
+    def _session_key(self, value: Optional[str]) -> None: ...
     def get_expiry_age(self, **kwargs: Any) -> int: ...
     def get_expiry_date(self, **kwargs: Any) -> datetime: ...
     def set_expiry(self, value: Optional[Union[datetime, int]]) -> None: ...
@@ -41,7 +41,7 @@ class SessionBase(Dict[str, Any]):
     def exists(self, session_key: str) -> bool: ...
     def create(self) -> None: ...
     def save(self, must_create: bool = ...) -> None: ...
-    def delete(self, session_key: Optional[Any] = ...) -> None: ...
+    def delete(self, session_key: Optional[str] = ...) -> None: ...
     def load(self) -> Dict[str, Any]: ...
     @classmethod
     def clear_expired(cls) -> None: ...

django-stubs/contrib/sessions/base_session.pyi

@@ -7,8 +7,8 @@ from django.db import models
 _T = TypeVar("_T", bound="AbstractBaseSession")
 
 class BaseSessionManager(models.Manager[_T]):
-    def encode(self, session_dict: Dict[str, int]) -> str: ...
-    def save(self, session_key: str, session_dict: Dict[str, int], expire_date: datetime) -> _T: ...
+    def encode(self, session_dict: Dict[str, Any]) -> str: ...
+    def save(self, session_key: str, session_dict: Dict[str, Any], expire_date: datetime) -> _T: ...
 
 class AbstractBaseSession(models.Model):
     expire_date: datetime
@@ -17,4 +17,4 @@ class AbstractBaseSession(models.Model):
     objects: Any = ...
     @classmethod
     def get_session_store_class(cls) -> Optional[Type[SessionBase]]: ...
-    def get_decoded(self) -> Dict[str, int]: ...
+    def get_decoded(self) -> Dict[str, Any]: ...