Replace 'Text' with 'str' in py3 stdlib (#5466)

stdlib/wsgiref/handlers.pyi

@@ -1,6 +1,6 @@
 from abc import abstractmethod
 from types import TracebackType
-from typing import IO, Callable, Dict, List, MutableMapping, Optional, Text, Tuple, Type
+from typing import IO, Callable, Dict, List, MutableMapping, Optional, Tuple, Type
 
 from .headers import Headers
 from .types import ErrorStream, InputStream, StartResponse, WSGIApplication, WSGIEnvironment
@@ -28,7 +28,7 @@ class BaseHandler:
 
     traceback_limit: Optional[int]
     error_status: str
-    error_headers: List[Tuple[Text, Text]]
+    error_headers: List[Tuple[str, str]]
     error_body: bytes
     def run(self, application: WSGIApplication) -> None: ...
     def setup_environ(self) -> None: ...
@@ -37,7 +37,7 @@ class BaseHandler:
     def set_content_length(self) -> None: ...
     def cleanup_headers(self) -> None: ...
     def start_response(
-        self, status: Text, headers: List[Tuple[Text, Text]], exc_info: Optional[_exc_info] = ...
+        self, status: str, headers: List[Tuple[str, str]], exc_info: Optional[_exc_info] = ...
     ) -> Callable[[bytes], None]: ...
     def send_preamble(self) -> None: ...
     def write(self, data: bytes) -> None: ...