[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

jupyter_server/kernelspecs/handlers.py

@@ -29,7 +29,7 @@ async def get(self, kernel_name, path, include_body=True):
         """Get a kernelspec resource."""
         ksm = self.kernel_spec_manager
         if path.lower().endswith(".png"):
-            self.set_header("Cache-Control", f"max-age={60*60*24*30}")
+            self.set_header("Cache-Control", f"max-age={60 * 60 * 24 * 30}")
         ksm = self.kernel_spec_manager
         if hasattr(ksm, "get_kernel_spec_resource"):
             # If the kernel spec manager defines a method to get kernelspec resources,

jupyter_server/services/contents/filemanager.py

@@ -667,7 +667,7 @@ def _copy_dir(self, from_path, to_path_original, to_name, to_path):
         """
         try:
             os_from_path = self._get_os_path(from_path.strip("/"))
-            os_to_path = f'{self._get_os_path(to_path_original.strip("/"))}/{to_name}'
+            os_to_path = f"{self._get_os_path(to_path_original.strip('/'))}/{to_name}"
             shutil.copytree(os_from_path, os_to_path)
             model = self.get(to_path, content=False)
         except OSError as err:
@@ -1150,7 +1150,7 @@ async def _copy_dir(
         """
         try:
             os_from_path = self._get_os_path(from_path.strip("/"))
-            os_to_path = f'{self._get_os_path(to_path_original.strip("/"))}/{to_name}'
+            os_to_path = f"{self._get_os_path(to_path_original.strip('/'))}/{to_name}"
             shutil.copytree(os_from_path, os_to_path)
             model = await self.get(to_path, content=False)
         except OSError as err:

jupyter_server/traittypes.py

@@ -164,8 +164,7 @@ class or its subclasses.  Our implementation is quite different
             self.klasses = klasses
         else:
             raise TraitError(
-                "The klasses attribute must be a list of class names or classes"
-                " not: %r" % klasses
+                "The klasses attribute must be a list of class names or classes not: %r" % klasses
             )
 
         if (kw is not None) and not isinstance(kw, dict):

tests/services/kernels/test_cull.py

@@ -151,7 +151,7 @@ async def test_cull_connected(jp_fetch, jp_ws_fetch):
                 "parent_header": {},
                 "metadata": {},
                 "content": {
-                    "code": f"import time\ntime.sleep({CULL_TIMEOUT-1})",
+                    "code": f"import time\ntime.sleep({CULL_TIMEOUT - 1})",
                     "silent": False,
                     "allow_stdin": False,
                     "stop_on_error": True,

tests/test_gateway.py

@@ -753,9 +753,9 @@ async def test_websocket_connection_with_session_id(init_gateway, jp_serverapp,
         expected_ws_url = (
             f"{mock_gateway_ws_url}/api/kernels/{kernel_id}/channels?session_id={conn.session_id}"
         )
-        assert (
-            expected_ws_url in caplog.text
-        ), "WebSocket URL does not contain the expected session_id."
+        assert expected_ws_url in caplog.text, (
+            "WebSocket URL does not contain the expected session_id."
+        )
 
         # Processing websocket messages happens in separate coroutines and any
         # errors in that process will show up in logs, but not bubble up to the