diff --git a/sanic/asgi.py b/sanic/asgi.py
index 59d91990..9931b669 100644
--- a/sanic/asgi.py
+++ b/sanic/asgi.py
@@ -6,11 +6,8 @@ from typing import (
     Any,
     Awaitable,
     Callable,
-    Dict,
-    List,
     MutableMapping,
     Optional,
-    Tuple,
     Union,
 )
 from urllib.parse import quote
@@ -18,10 +15,8 @@ from urllib.parse import quote
 import sanic.app  # noqa
 
 from sanic.compat import Header
-from sanic.exceptions import InvalidUsage, ServerError
-from sanic.log import logger
+from sanic.exceptions import InvalidUsage
 from sanic.request import Request
-from sanic.response import StreamingHTTPResponse
 from sanic.websocket import WebSocketConnection
 
 
@@ -278,11 +273,13 @@ class ASGIApp:
     async def send(self, data, end_stream):
         if self.response:
             response, self.response = self.response, None
-            await self.transport.send({
-                "type": "http.response.start",
-                "status": response.status,
-                "headers": response.processed_headers,
-            })
+            await self.transport.send(
+                {
+                    "type": "http.response.start",
+                    "status": response.status,
+                    "headers": response.processed_headers,
+                }
+            )
             response_body = getattr(response, "body", None)
             if response_body:
                 data = response_body + data if data else response_body
diff --git a/sanic/headers.py b/sanic/headers.py
index 3dc729a9..f9a0ec3b 100644
--- a/sanic/headers.py
+++ b/sanic/headers.py
@@ -175,11 +175,13 @@ def parse_host(host: str) -> Tuple[Optional[str], Optional[int]]:
     host, port = m.groups()
     return host.lower(), int(port) if port is not None else None
 
+
 _HTTP1_STATUSLINES = [
     b"HTTP/1.1 %d %b\r\n" % (status, STATUS_CODES.get(status, b"UNKNOWN"))
     for status in range(1000)
 ]
 
+
 def format_http1_response(status: int, headers: HeaderBytesIterable) -> bytes:
     """Format a HTTP/1.1 response header."""
     # Note: benchmarks show that here bytes concat is faster than bytearray,
diff --git a/sanic/request.py b/sanic/request.py
index 7572fa76..fb98cbae 100644
--- a/sanic/request.py
+++ b/sanic/request.py
@@ -111,9 +111,7 @@ class Request:
         # This logic of determining which response to use is subject to change
         if response is None:
             response = self.stream.response or HTTPResponse(
-                status=status,
-                headers=headers,
-                content_type=content_type,
+                status=status, headers=headers, content_type=content_type,
             )
         # Connect the response and return it
         return self.stream.respond(response)
diff --git a/sanic/response.py b/sanic/response.py
index 78df7afe..9f27bcd2 100644
--- a/sanic/response.py
+++ b/sanic/response.py
@@ -43,10 +43,7 @@ class BaseHTTPResponse:
             self.headers.setdefault("content-type", self.content_type)
         # Encode headers into bytes
         return (
-            (
-                name.encode("ascii"),
-                f"{value}".encode("utf-8", errors="surrogateescape")
-            )
+            (name.encode("ascii"), f"{value}".encode(errors="surrogateescape"))
             for name, value in self.headers.items()
         )
 
@@ -64,6 +61,7 @@ class BaseHTTPResponse:
 class StreamingHTTPResponse(BaseHTTPResponse):
     """Old style streaming response. Use `request.respond()` instead of this in
     new code to avoid the callback."""
+
     __slots__ = (
         "protocol",
         "streaming_fn",
@@ -101,7 +99,6 @@ class StreamingHTTPResponse(BaseHTTPResponse):
         await super().send(*args, **kwargs)
 
 
-
 class HTTPResponse(BaseHTTPResponse):
     __slots__ = ("body", "status", "content_type", "headers", "_cookies")
 
diff --git a/tests/test_response.py b/tests/test_response.py
index b2d5a157..34ed13ec 100644
--- a/tests/test_response.py
+++ b/tests/test_response.py
@@ -15,6 +15,7 @@ from aiofiles import os as async_os
 from sanic.response import (
     HTTPResponse,
     StreamingHTTPResponse,
+    empty,
     file,
     file_stream,
     json,
@@ -22,7 +23,6 @@ from sanic.response import (
     stream,
     text,
 )
-from sanic.response import empty
 from sanic.server import HttpProtocol
 from sanic.testing import HOST, PORT