adjust isort config (#4290)

Fixes #4288.

- Default imports to THIRD_PARTY, so in effect we merge the FIRST_PARTY and THIRD_PARTY stubs. This means import order is no longer affected by whether typing_extensions is installed locally.
- Treat typing_extensions, _typeshed and some others as standard library modules.

Note that isort master is very different from the latest release; we'll have to do something
different if and when the next isort release comes out.

third_party/2/pathlib2.pyi

@@ -1,10 +1,9 @@
 import os
 import sys
+from _typeshed import OpenBinaryMode, OpenTextMode
 from types import TracebackType
 from typing import IO, Any, BinaryIO, Generator, List, Optional, Sequence, TextIO, Tuple, Type, TypeVar, Union, overload
 
-from _typeshed import OpenBinaryMode, OpenTextMode
-
 _P = TypeVar("_P", bound=PurePath)
 
 if sys.version_info >= (3, 6):

third_party/2and3/atomicwrites/__init__.pyi

@@ -1,7 +1,6 @@
 import sys
-from typing import IO, Any, AnyStr, Callable, ContextManager, Generic, Optional, Text, Type, Union
-
 from _typeshed import AnyPath
+from typing import IO, Any, AnyStr, Callable, ContextManager, Generic, Optional, Text, Type, Union
 
 def replace_atomic(src: AnyStr, dst: AnyStr) -> None: ...
 def move_atomic(src: AnyStr, dst: AnyStr) -> None: ...

third_party/2and3/chardet/universaldetector.pyi

@@ -1,7 +1,6 @@
 import sys
 from logging import Logger
 from typing import Dict, Optional, Pattern
-
 from typing_extensions import TypedDict
 
 class _FinalResultType(TypedDict):

third_party/2and3/dateutil/easter.pyi

@@ -1,5 +1,4 @@
 from datetime import date
-
 from typing_extensions import Literal
 
 EASTER_JULIAN: Literal[1]

third_party/2and3/flask/testing.pyi

@@ -6,7 +6,6 @@ from typing import IO, Any, Iterable, Mapping, Optional, Text, TypeVar, Union
 
 from click import BaseCommand
 from click.testing import CliRunner, Result
-
 from werkzeug.test import Client
 
 def make_test_environ_builder(

third_party/2and3/jinja2/utils.pyi

@@ -1,8 +1,7 @@
+from _typeshed import AnyPath
 from typing import IO, Any, Callable, Iterable, Optional, Protocol, Text, TypeVar, Union
-
 from typing_extensions import Literal
 
-from _typeshed import AnyPath
 from markupsafe import Markup as Markup, escape as escape, soft_unicode as soft_unicode
 
 missing: Any

third_party/2and3/toml.pyi

@@ -1,8 +1,7 @@
 import datetime
 import sys
-from typing import IO, Any, List, Mapping, MutableMapping, Optional, Text, Type, Union
-
 from _typeshed import StrPath, SupportsWrite
+from typing import IO, Any, List, Mapping, MutableMapping, Optional, Text, Type, Union
 
 if sys.version_info >= (3, 6):
     _PathLike = StrPath

third_party/2and3/werkzeug/contrib/fixers.pyi

@@ -1,6 +1,5 @@
-from typing import Any, Iterable, List, Mapping, Optional, Sequence, Set, Text
-
 from _typeshed.wsgi import StartResponse, WSGIApplication, WSGIEnvironment
+from typing import Any, Iterable, List, Mapping, Optional, Sequence, Set, Text
 
 from ..middleware.proxy_fix import ProxyFix as ProxyFix
 

third_party/2and3/werkzeug/contrib/profiler.pyi

@@ -1,6 +1,5 @@
-from typing import AnyStr, Generic, Tuple
-
 from _typeshed import SupportsWrite
+from typing import AnyStr, Generic, Tuple
 
 from ..middleware.profiler import *
 

third_party/2and3/werkzeug/datastructures.pyi

@@ -1,4 +1,5 @@
 import collections
+from _typeshed import SupportsWrite
 from typing import (
     IO,
     Any,
@@ -21,8 +22,6 @@ from typing import (
     overload,
 )
 
-from _typeshed import SupportsWrite
-
 _K = TypeVar("_K")
 _V = TypeVar("_V")
 _R = TypeVar("_R")

third_party/2and3/werkzeug/exceptions.pyi

@@ -1,7 +1,7 @@
 import datetime
+from _typeshed.wsgi import StartResponse, WSGIEnvironment
 from typing import Any, Dict, Iterable, List, NoReturn, Optional, Protocol, Text, Tuple, Type, Union
 
-from _typeshed.wsgi import StartResponse, WSGIEnvironment
 from werkzeug.wrappers import Response
 
 class _EnvironContainer(Protocol):

third_party/2and3/werkzeug/formparser.pyi

@@ -1,3 +1,4 @@
+from _typeshed.wsgi import WSGIEnvironment
 from typing import (
     IO,
     Any,
@@ -15,8 +16,6 @@ from typing import (
     Union,
 )
 
-from _typeshed.wsgi import WSGIEnvironment
-
 from .datastructures import Headers
 
 _Dict = Any

third_party/2and3/werkzeug/http.pyi

@@ -1,4 +1,5 @@
 import sys
+from _typeshed.wsgi import WSGIEnvironment
 from datetime import datetime, timedelta
 from typing import (
     Any,
@@ -17,8 +18,6 @@ from typing import (
     overload,
 )
 
-from _typeshed.wsgi import WSGIEnvironment
-
 from .datastructures import (
     Accept,
     Authorization,

third_party/2and3/werkzeug/middleware/dispatcher.pyi

@@ -1,6 +1,5 @@
-from typing import Any, Iterable, Mapping, Optional, Text
-
 from _typeshed.wsgi import StartResponse, WSGIApplication, WSGIEnvironment
+from typing import Any, Iterable, Mapping, Optional, Text
 
 class DispatcherMiddleware(object):
     app: WSGIApplication

third_party/2and3/werkzeug/middleware/http_proxy.pyi

@@ -1,6 +1,5 @@
-from typing import Any, Dict, Iterable, Mapping, MutableMapping, Text
-
 from _typeshed.wsgi import StartResponse, WSGIApplication, WSGIEnvironment
+from typing import Any, Dict, Iterable, Mapping, MutableMapping, Text
 
 _Opts = Mapping[Text, Any]
 _MutableOpts = MutableMapping[Text, Any]

third_party/2and3/werkzeug/middleware/lint.pyi

@@ -1,8 +1,7 @@
 import sys
-from typing import Any, Iterable, Iterator, List, Mapping, Optional, Protocol, Tuple
-
 from _typeshed import SupportsWrite
 from _typeshed.wsgi import StartResponse, WSGIApplication, WSGIEnvironment
+from typing import Any, Iterable, Iterator, List, Mapping, Optional, Protocol, Tuple
 
 from ..datastructures import Headers
 

third_party/2and3/werkzeug/middleware/profiler.pyi

@@ -1,6 +1,5 @@
-from typing import IO, Iterable, List, Optional, Text, Tuple, Union
-
 from _typeshed.wsgi import StartResponse, WSGIApplication, WSGIEnvironment
+from typing import IO, Iterable, List, Optional, Text, Tuple, Union
 
 class ProfilerMiddleware(object):
     def __init__(

third_party/2and3/werkzeug/middleware/proxy_fix.pyi

@@ -1,6 +1,5 @@
-from typing import Iterable, Optional
-
 from _typeshed.wsgi import StartResponse, WSGIApplication, WSGIEnvironment
+from typing import Iterable, Optional
 
 class ProxyFix(object):
     app: WSGIApplication

third_party/2and3/werkzeug/middleware/shared_data.pyi

@@ -1,7 +1,6 @@
 import datetime
-from typing import IO, Callable, Iterable, List, Mapping, Optional, Text, Tuple, Union
-
 from _typeshed.wsgi import StartResponse, WSGIApplication, WSGIEnvironment
+from typing import IO, Callable, Iterable, List, Mapping, Optional, Text, Tuple, Union
 
 _V = Union[Tuple[Text, Text], Text]
 

third_party/2and3/werkzeug/test.pyi

@@ -1,9 +1,7 @@
 import sys
-from typing import Any, Generic, Optional, Text, Tuple, Type, TypeVar, overload
-
-from typing_extensions import Literal
-
 from _typeshed.wsgi import WSGIEnvironment
+from typing import Any, Generic, Optional, Text, Tuple, Type, TypeVar, overload
+from typing_extensions import Literal
 
 if sys.version_info < (3,):
     from urllib2 import Request as U2Request

third_party/2and3/werkzeug/wrappers.pyi

@@ -1,4 +1,5 @@
 import sys
+from _typeshed.wsgi import InputStream, WSGIEnvironment
 from datetime import datetime
 from typing import (
     Any,
@@ -16,11 +17,8 @@ from typing import (
     Union,
     overload,
 )
-
 from typing_extensions import Literal
 
-from _typeshed.wsgi import InputStream, WSGIEnvironment
-
 from .datastructures import (
     Accept,
     Authorization,

third_party/2and3/werkzeug/wsgi.pyi

@@ -1,7 +1,6 @@
-from typing import Any, Iterable, Optional, Text
-
 from _typeshed import SupportsRead
 from _typeshed.wsgi import InputStream, WSGIEnvironment
+from typing import Any, Iterable, Optional, Text
 
 from .middleware.dispatcher import DispatcherMiddleware as DispatcherMiddleware
 from .middleware.http_proxy import ProxyMiddleware as ProxyMiddleware

third_party/2and3/yaml/cyaml.pyi

@@ -1,6 +1,6 @@
+from _typeshed import SupportsRead
 from typing import IO, Any, Mapping, Optional, Sequence, Text, Union
 
-from _typeshed import SupportsRead
 from yaml.constructor import BaseConstructor, Constructor, SafeConstructor
 from yaml.representer import BaseRepresenter, Representer, SafeRepresenter
 from yaml.resolver import BaseResolver, Resolver

third_party/3/waitress/trigger.pyi

@@ -2,7 +2,6 @@ import sys
 from socket import SocketType
 from threading import Lock
 from typing import Callable, Mapping, Optional
-
 from typing_extensions import Literal
 
 from . import wasyncore as wasyncore