Remove TYPE_CHECKING, add ignore of TCH on gateway files

Author: kevin-bates

jupyter_server/gateway/gateway_client.py

@@ -18,6 +18,7 @@
 from jupyter_events import EventLogger
 from tornado import web
 from tornado.httpclient import AsyncHTTPClient, HTTPClientError, HTTPResponse
+from tornado.httputil import HTTPHeaders
 from traitlets import (
     Bool,
     Float,
@@ -34,9 +35,6 @@
 
 from jupyter_server import DEFAULT_EVENTS_SCHEMA_PATH, JUPYTER_SERVER_EVENTS_URI
 
-if ty.TYPE_CHECKING:
-    from tornado.httputil import HTTPHeaders
-
 ERROR_STATUS = "error"
 SUCCESS_STATUS = "success"
 STATUS_KEY = "status"

pyproject.toml

@@ -156,6 +156,7 @@ unfixable = [
 [tool.ruff.lint.extend-per-file-ignores]
 "jupyter_server/*" = ["S101", "RET", "S110", "UP031", "FBT", "FA100", "SLF001", "A002",
                       "SIM105", "A001", "UP007", "PLR2004", "T201", "N818", "F403"]
+"jupyter_server/gateway/*" = ["TCH" ]
 "tests/*" = ["UP031", "PT", 'EM', "TRY", "RET", "SLF", "C408", "F841", "FBT", "A002", "FLY", "N",
             "PERF", "ASYNC", "T201", "FA100", "E711", "INP", "TCH", "SIM105", "A001", "PLW0603"]
 "examples/*_config.py" = ["F821"]