run black over stubs, add checking to travis

django-stubs-generated/core/mail/__init__.pyi

@@ -1,24 +1,18 @@
 from typing import Any, List, Optional, Tuple
 
 from django.core.mail.backends.base import BaseEmailBackend
-from django.core.mail.message import \
-    DEFAULT_ATTACHMENT_MIME_TYPE as DEFAULT_ATTACHMENT_MIME_TYPE
+from django.core.mail.message import DEFAULT_ATTACHMENT_MIME_TYPE as DEFAULT_ATTACHMENT_MIME_TYPE
 from django.core.mail.message import BadHeaderError as BadHeaderError
 from django.core.mail.message import EmailMessage as EmailMessage
-from django.core.mail.message import \
-    EmailMultiAlternatives as EmailMultiAlternatives
+from django.core.mail.message import EmailMultiAlternatives as EmailMultiAlternatives
 from django.core.mail.message import SafeMIMEMultipart as SafeMIMEMultipart
 from django.core.mail.message import SafeMIMEText as SafeMIMEText
-from django.core.mail.message import \
-    forbid_multi_line_headers as forbid_multi_line_headers
+from django.core.mail.message import forbid_multi_line_headers as forbid_multi_line_headers
 from django.core.mail.message import make_msgid as make_msgid
 from django.core.mail.utils import DNS_NAME as DNS_NAME
 from django.core.mail.utils import CachedDnsName as CachedDnsName
 
-
-def get_connection(
-    backend: Optional[str] = ..., fail_silently: bool = ..., **kwds: Any
-) -> BaseEmailBackend: ...
+def get_connection(backend: Optional[str] = ..., fail_silently: bool = ..., **kwds: Any) -> BaseEmailBackend: ...
 def send_mail(
     subject: str,
     message: str,

django-stubs-generated/core/mail/backends/base.pyi

@@ -1,13 +1,10 @@
 from typing import Any, Optional
 
-
 class BaseEmailBackend:
     fail_silently: Any = ...
     def __init__(self, fail_silently: bool = ..., **kwargs: Any) -> None: ...
     def open(self) -> None: ...
     def close(self) -> None: ...
     def __enter__(self) -> BaseEmailBackend: ...
-    def __exit__(
-        self, exc_type: None, exc_value: None, traceback: None
-    ) -> None: ...
+    def __exit__(self, exc_type: None, exc_value: None, traceback: None) -> None: ...
     def send_messages(self, email_messages: Any) -> None: ...

django-stubs-generated/core/mail/backends/console.pyi

@@ -3,12 +3,9 @@ from typing import Any, Iterator, List, Optional, Union
 from django.core.mail.backends.base import BaseEmailBackend
 from django.core.mail.message import EmailMessage
 
-
 class EmailBackend(BaseEmailBackend):
     fail_silently: bool
     stream: _io.StringIO = ...
     def __init__(self, *args: Any, **kwargs: Any) -> None: ...
     def write_message(self, message: EmailMessage) -> None: ...
-    def send_messages(
-        self, email_messages: Union[Iterator[Any], List[EmailMessage]]
-    ) -> int: ...
+    def send_messages(self, email_messages: Union[Iterator[Any], List[EmailMessage]]) -> int: ...

django-stubs-generated/core/mail/backends/dummy.pyi

@@ -3,7 +3,6 @@ from typing import Any, List, Optional
 from django.core.mail.backends.base import BaseEmailBackend
 from django.core.mail.message import EmailMessage
 
-
 class EmailBackend(BaseEmailBackend):
     fail_silently: bool
     def send_messages(self, email_messages: List[EmailMessage]) -> int: ...

django-stubs-generated/core/mail/backends/filebased.pyi

@@ -1,16 +1,12 @@
 from typing import Any, Optional
 
-from django.core.mail.backends.console import \
-    EmailBackend as ConsoleEmailBackend
+from django.core.mail.backends.console import EmailBackend as ConsoleEmailBackend
 from django.core.mail.message import EmailMessage
 
-
 class EmailBackend(ConsoleEmailBackend):
     fail_silently: bool
     file_path: str = ...
-    def __init__(
-        self, *args: Any, file_path: Optional[Any] = ..., **kwargs: Any
-    ) -> None: ...
+    def __init__(self, *args: Any, file_path: Optional[Any] = ..., **kwargs: Any) -> None: ...
     def write_message(self, message: EmailMessage) -> None: ...
     stream: None = ...
     def open(self) -> bool: ...

django-stubs-generated/core/mail/backends/locmem.pyi

@@ -3,10 +3,7 @@ from typing import Any, Iterator, List, Optional, Union
 from django.core.mail.backends.base import BaseEmailBackend
 from django.core.mail.message import EmailMessage
 
-
 class EmailBackend(BaseEmailBackend):
     fail_silently: bool
     def __init__(self, *args: Any, **kwargs: Any) -> None: ...
-    def send_messages(
-        self, messages: Union[Iterator[Any], List[EmailMessage]]
-    ) -> int: ...
+    def send_messages(self, messages: Union[Iterator[Any], List[EmailMessage]]) -> int: ...

django-stubs-generated/core/mail/backends/smtp.pyi

@@ -4,7 +4,6 @@ from typing import Any, Iterator, List, Optional, Type, Union
 from django.core.mail.backends.base import BaseEmailBackend
 from django.core.mail.message import EmailMessage
 
-
 class EmailBackend(BaseEmailBackend):
     fail_silently: bool
     host: Any = ...
@@ -35,6 +34,4 @@ class EmailBackend(BaseEmailBackend):
     def connection_class(self) -> Type[SMTP]: ...
     def open(self) -> Optional[bool]: ...
     def close(self) -> None: ...
-    def send_messages(
-        self, email_messages: Union[Iterator[Any], List[EmailMessage]]
-    ) -> int: ...
+    def send_messages(self, email_messages: Union[Iterator[Any], List[EmailMessage]]) -> int: ...

django-stubs-generated/core/mail/message.pyi

@@ -14,13 +14,9 @@ class BadHeaderError(ValueError): ...
 
 ADDRESS_HEADERS: Any
 
-def forbid_multi_line_headers(
-    name: str, val: str, encoding: str
-) -> Tuple[str, str]: ...
+def forbid_multi_line_headers(name: str, val: str, encoding: str) -> Tuple[str, str]: ...
 def split_addr(addr: str, encoding: str) -> Tuple[str, str]: ...
-def sanitize_address(
-    addr: Union[Tuple[str, str], str], encoding: str
-) -> str: ...
+def sanitize_address(addr: Union[Tuple[str, str], str], encoding: str) -> str: ...
 
 class MIMEMixin:
     def as_string(self, unixfrom: bool = ..., linesep: str = ...) -> str: ...
@@ -39,9 +35,7 @@ class SafeMIMEText(MIMEMixin, MIMEText):
     policy: email._policybase.Compat32
     preamble: None
     encoding: str = ...
-    def __init__(
-        self, _text: str, _subtype: str = ..., _charset: str = ...
-    ) -> None: ...
+    def __init__(self, _text: str, _subtype: str = ..., _charset: str = ...) -> None: ...
     def __setitem__(self, name: str, val: str) -> None: ...
     def set_payload(self, payload: str, charset: str = ...) -> None: ...
 
@@ -52,12 +46,7 @@ class SafeMIMEMultipart(MIMEMixin, MIMEMultipart):
     preamble: None
     encoding: str = ...
     def __init__(
-        self,
-        _subtype: str = ...,
-        boundary: None = ...,
-        _subparts: None = ...,
-        encoding: str = ...,
-        **_params: Any
+        self, _subtype: str = ..., boundary: None = ..., _subparts: None = ..., encoding: str = ..., **_params: Any
     ) -> None: ...
     def __setitem__(self, name: str, val: str) -> None: ...
 
@@ -83,9 +72,7 @@ class EmailMessage:
         to: Optional[Union[List[str], Tuple[str, str], str]] = ...,
         bcc: Optional[Union[List[str], Tuple[str], str]] = ...,
         connection: Optional[BaseEmailBackend] = ...,
-        attachments: Optional[
-            Union[List[Tuple[str, str]], List[MIMEText]]
-        ] = ...,
+        attachments: Optional[Union[List[Tuple[str, str]], List[MIMEText]]] = ...,
         headers: Optional[Dict[str, str]] = ...,
         cc: Optional[Union[List[str], Tuple[str, str], str]] = ...,
         reply_to: Optional[Union[List[Optional[str]], str]] = ...,

django-stubs-generated/core/mail/utils.pyi

@@ -1,6 +1,5 @@
 from typing import Any, Optional
 
-
 class CachedDnsName:
     def get_fqdn(self) -> str: ...