run black over stubs, add checking to travis

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

@@ -17,13 +17,9 @@ class SessionBase:
     def __init__(self, session_key: Optional[str] = ...) -> None: ...
     def __contains__(self, key: str) -> bool: ...
     def __getitem__(self, key: str) -> Union[Model, int, str]: ...
-    def __setitem__(
-        self, key: str, value: Union[datetime, Model, int, str]
-    ) -> None: ...
+    def __setitem__(self, key: str, value: Union[datetime, Model, int, str]) -> None: ...
     def __delitem__(self, key: str) -> None: ...
-    def get(
-        self, key: str, default: Optional[str] = ...
-    ) -> Optional[Union[datetime, int, str]]: ...
+    def get(self, key: str, default: Optional[str] = ...) -> Optional[Union[datetime, int, str]]: ...
     def pop(self, key: str, default: Any = ...) -> Union[int, str]: ...
     def setdefault(self, key: str, value: str) -> str: ...
     def set_test_cookie(self) -> None: ...

django-stubs-generated/contrib/sessions/backends/db.pyi

@@ -5,7 +5,6 @@ from django.contrib.sessions.base_session import AbstractBaseSession
 from django.contrib.sessions.models import Session
 from django.db.models.base import Model
 
-
 class SessionStore(SessionBase):
     accessed: bool
     serializer: Type[django.core.signing.JSONSerializer]
@@ -17,9 +16,7 @@ class SessionStore(SessionBase):
     def exists(self, session_key: Optional[str]) -> bool: ...
     modified: bool = ...
     def create(self) -> None: ...
-    def create_model_instance(
-        self, data: Dict[str, Model]
-    ) -> AbstractBaseSession: ...
+    def create_model_instance(self, data: Dict[str, Model]) -> AbstractBaseSession: ...
     def save(self, must_create: bool = ...) -> None: ...
     def delete(self, session_key: Optional[str] = ...) -> None: ...
     @classmethod

django-stubs-generated/contrib/sessions/backends/file.pyi

@@ -2,7 +2,6 @@ from typing import Any, Dict, Optional, Union
 
 from django.contrib.sessions.backends.base import SessionBase
 
-
 class SessionStore(SessionBase):
     accessed: bool
     serializer: Type[django.core.signing.JSONSerializer]

django-stubs-generated/contrib/sessions/backends/signed_cookies.pyi

@@ -3,7 +3,6 @@ from typing import Any, Dict, Optional, Union
 
 from django.contrib.sessions.backends.base import SessionBase
 
-
 class SessionStore(SessionBase):
     accessed: bool
     serializer: Type[django.core.signing.JSONSerializer]

django-stubs-generated/contrib/sessions/base_session.pyi

@@ -3,18 +3,12 @@ from typing import Any, Dict, Optional
 
 from django.db import models
 
-
 class BaseSessionManager(models.Manager):
     creation_counter: int
     model: None
     name: None
     def encode(self, session_dict: Dict[str, int]) -> str: ...
-    def save(
-        self,
-        session_key: str,
-        session_dict: Dict[str, int],
-        expire_date: datetime,
-    ) -> AbstractBaseSession: ...
+    def save(self, session_key: str, session_dict: Dict[str, int], expire_date: datetime) -> AbstractBaseSession: ...
 
 class AbstractBaseSession(models.Model):
     session_key: Any = ...

django-stubs-generated/contrib/sessions/management/commands/clearsessions.pyi

@@ -2,7 +2,6 @@ from typing import Any, Optional
 
 from django.core.management.base import BaseCommand
 
-
 class Command(BaseCommand):
     stderr: django.core.management.base.OutputWrapper
     stdout: django.core.management.base.OutputWrapper

django-stubs-generated/contrib/sessions/middleware.pyi

@@ -6,15 +6,9 @@ from django.http.request import HttpRequest
 from django.http.response import HttpResponseBase
 from django.utils.deprecation import MiddlewareMixin
 
-
 class SessionMiddleware(MiddlewareMixin):
     get_response: Callable[[WSGIRequest], HttpResponseBase] = ...
     SessionStore: Type[SessionBase] = ...
-
     def __init__(self, get_response: Optional[Callable] = ...) -> None: ...
-
     def process_request(self, request: HttpRequest) -> None: ...
-
-    def process_response(
-            self, request: WSGIRequest, response: HttpResponseBase
-    ) -> HttpResponseBase: ...
+    def process_response(self, request: WSGIRequest, response: HttpResponseBase) -> HttpResponseBase: ...

django-stubs-generated/contrib/sessions/models.pyi

@@ -1,9 +1,7 @@
 from typing import Any, Optional, Type
 
 from django.contrib.sessions.backends.db import SessionStore
-from django.contrib.sessions.base_session import (AbstractBaseSession,
-                                                  BaseSessionManager)
-
+from django.contrib.sessions.base_session import AbstractBaseSession, BaseSessionManager
 
 class SessionManager(BaseSessionManager):
     creation_counter: int

django-stubs-generated/contrib/sessions/serializers.pyi

@@ -3,7 +3,6 @@ from typing import Any, Dict, Optional
 from django.core.signing import JSONSerializer as BaseJSONSerializer
 from django.db.models.base import Model
 
-
 class PickleSerializer:
     def dumps(self, obj: Dict[str, Model]) -> bytes: ...
     def loads(self, data: bytes) -> Dict[str, Model]: ...