From 84df5297d5b26d32928b92da27227baba524fbe9 Mon Sep 17 00:00:00 2001
From: Sai Rahul Poruri <rporuri@enthought.com>
Date: Sat, 10 Oct 2020 15:49:55 +0100
Subject: [PATCH] CLN : Update super usage

This commit updates the super usage. Because Python 2 is not supported
anymore, super usage can be updated such that super is called without
any arguments in the default case where super is called with the class
name and self.

Note that all usage of super has not been updated - a few cases which
smelled funny have been ignored.
---
 notebook/base/handlers.py                     | 31 +++++++++----------
 notebook/base/zmqhandlers.py                  |  2 +-
 notebook/bundler/bundlerextensions.py         |  2 +-
 notebook/files/handlers.py                    |  3 +-
 notebook/gateway/handlers.py                  |  8 ++---
 notebook/gateway/managers.py                  |  6 ++--
 notebook/jstest.py                            |  8 ++---
 notebook/nbconvert/handlers.py                |  6 ++--
 notebook/nbextensions.py                      |  2 +-
 notebook/notebookapp.py                       | 10 +++---
 notebook/serverextensions.py                  |  2 +-
 .../services/contents/largefilemanager.py     |  4 +--
 notebook/services/kernels/handlers.py         | 12 +++----
 .../sessions/tests/test_sessionmanager.py     |  2 +-
 notebook/terminal/handlers.py                 |  6 ++--
 notebook/terminal/terminalmanager.py          |  4 +--
 notebook/tests/test_gateway.py                |  2 +-
 notebook/tests/test_notebookapp.py            |  2 +-
 notebook/tests/test_serverextensions.py       |  4 +--
 19 files changed, 56 insertions(+), 60 deletions(-)

diff --git a/notebook/base/handlers.py b/notebook/base/handlers.py
index 743f7bac73..e3400eba11 100755
--- a/notebook/base/handlers.py
+++ b/notebook/base/handlers.py
@@ -301,7 +301,7 @@ def allow_credentials(self):
     
     def set_default_headers(self):
         """Add CORS headers, if defined"""
-        super(IPythonHandler, self).set_default_headers()
+        super().set_default_headers()
         if self.allow_origin:
             self.set_header("Access-Control-Allow-Origin", self.allow_origin)
         elif self.allow_origin_pat:
@@ -442,7 +442,7 @@ def check_xsrf_cookie(self):
             # Servers without authentication are vulnerable to XSRF
             return
         try:
-            return super(IPythonHandler, self).check_xsrf_cookie()
+            return super().check_xsrf_cookie()
         except web.HTTPError as e:
             if self.request.method in {'GET', 'HEAD'}:
                 # Consider Referer a sufficient cross-origin check for GET requests
@@ -496,7 +496,7 @@ def check_host(self):
     def prepare(self):
         if not self.check_host():
             raise web.HTTPError(403)
-        return super(IPythonHandler, self).prepare()
+        return super().prepare()
 
     #---------------------------------------------------------------
     # template rendering
@@ -591,7 +591,7 @@ class APIHandler(IPythonHandler):
     def prepare(self):
         if not self.check_origin():
             raise web.HTTPError(404)
-        return super(APIHandler, self).prepare()
+        return super().prepare()
 
     def write_error(self, status_code, **kwargs):
         """APIHandler errors are JSON, not human pages"""
@@ -618,7 +618,7 @@ def get_current_user(self):
         # preserve _user_cache so we don't raise more than once
         if hasattr(self, '_user_cache'):
             return self._user_cache
-        self._user_cache = user = super(APIHandler, self).get_current_user()
+        self._user_cache = user = super().get_current_user()
         return user
 
     def get_login_url(self):
@@ -627,12 +627,12 @@ def get_login_url(self):
         # instead of redirecting, raise 403 instead.
         if not self.current_user:
             raise web.HTTPError(403)
-        return super(APIHandler, self).get_login_url()
+        return super().get_login_url()
 
     @property
     def content_security_policy(self):
         csp = '; '.join([
-                super(APIHandler, self).content_security_policy,
+                super().content_security_policy,
                 "default-src 'none'",
             ])
         return csp
@@ -653,7 +653,7 @@ def update_api_activity(self):
     def finish(self, *args, **kwargs):
         self.update_api_activity()
         self.set_header('Content-Type', 'application/json')
-        return super(APIHandler, self).finish(*args, **kwargs)
+        return super().finish(*args, **kwargs)
 
     def options(self, *args, **kwargs):
         if 'Access-Control-Allow-Headers' in self.settings.get('headers', {}):
@@ -700,13 +700,12 @@ class AuthenticatedFileHandler(IPythonHandler, web.StaticFileHandler):
     def content_security_policy(self):
         # In case we're serving HTML/SVG, confine any Javascript to a unique
         # origin so it can't interact with the notebook server.
-        return super(AuthenticatedFileHandler, self).content_security_policy + \
-                "; sandbox allow-scripts"
+        return super().content_security_policy + "; sandbox allow-scripts"
 
     @web.authenticated
     def head(self, path):
         self.check_xsrf_cookie()
-        return super(AuthenticatedFileHandler, self).head(path)
+        return super().head(path)
 
     @web.authenticated
     def get(self, path):
@@ -731,10 +730,10 @@ def get_content_type(self):
             if cur_mime == 'text/plain':
                 return 'text/plain; charset=UTF-8'
             else:
-                return super(AuthenticatedFileHandler, self).get_content_type()
+                return super().get_content_type()
 
     def set_headers(self):
-        super(AuthenticatedFileHandler, self).set_headers()
+        super().set_headers()
         # disable browser caching, rely on 304 replies for savings
         if "v" not in self.request.arguments:
             self.add_header("Cache-Control", "no-cache")
@@ -749,7 +748,7 @@ def validate_absolute_path(self, root, absolute_path):
         
         Adding to tornado's own handling, forbids the serving of hidden files.
         """
-        abs_path = super(AuthenticatedFileHandler, self).validate_absolute_path(root, absolute_path)
+        abs_path = super().validate_absolute_path(root, absolute_path)
         abs_root = os.path.abspath(root)
         if is_hidden(abs_path, abs_root) and not self.contents_manager.allow_hidden:
             self.log.info("Refusing to serve hidden file, via 404 Error, use flag 'ContentsManager.allow_hidden' to enable")
@@ -795,7 +794,7 @@ class FileFindHandler(IPythonHandler, web.StaticFileHandler):
     _static_paths = {}
     
     def set_headers(self):
-        super(FileFindHandler, self).set_headers()
+        super().set_headers()
         # disable browser caching, rely on 304 replies for savings
         if "v" not in self.request.arguments or \
                 any(self.request.path.startswith(path) for path in self.no_cache_paths):
@@ -842,7 +841,7 @@ def validate_absolute_path(self, root, absolute_path):
             if (absolute_path + os.sep).startswith(root):
                 break
         
-        return super(FileFindHandler, self).validate_absolute_path(root, absolute_path)
+        return super().validate_absolute_path(root, absolute_path)
 
 
 class APIVersionHandler(APIHandler):
diff --git a/notebook/base/zmqhandlers.py b/notebook/base/zmqhandlers.py
index 327fdd5598..dc3a7b69e2 100644
--- a/notebook/base/zmqhandlers.py
+++ b/notebook/base/zmqhandlers.py
@@ -289,7 +289,7 @@ def get(self, *args, **kwargs):
         # assign and yield in two step to avoid tornado 3 issues
         res = self.pre_get()
         yield maybe_future(res)
-        res = super(AuthenticatedZMQStreamHandler, self).get(*args, **kwargs)
+        res = super().get(*args, **kwargs)
         yield maybe_future(res)
 
     def initialize(self):
diff --git a/notebook/bundler/bundlerextensions.py b/notebook/bundler/bundlerextensions.py
index 576336c3ad..2ac346f971 100644
--- a/notebook/bundler/bundlerextensions.py
+++ b/notebook/bundler/bundlerextensions.py
@@ -294,7 +294,7 @@ class BundlerExtensionApp(BaseExtensionApp):
 
     def start(self):
         """Perform the App's functions as configured"""
-        super(BundlerExtensionApp, self).start()
+        super().start()
 
         # The above should have called a subcommand and raised NoStart; if we
         # get here, it didn't, so we should self.log.info a message.
diff --git a/notebook/files/handlers.py b/notebook/files/handlers.py
index 3b2570a185..b412cd84e5 100644
--- a/notebook/files/handlers.py
+++ b/notebook/files/handlers.py
@@ -26,8 +26,7 @@ class FilesHandler(IPythonHandler):
     def content_security_policy(self):
         # In case we're serving HTML/SVG, confine any Javascript to a unique
         # origin so it can't interact with the notebook server.
-        return super(FilesHandler, self).content_security_policy + \
-               "; sandbox allow-scripts"
+        return super().content_security_policy + "; sandbox allow-scripts"
 
     @web.authenticated
     def head(self, path):
diff --git a/notebook/gateway/handlers.py b/notebook/gateway/handlers.py
index 6576c3cefc..75de066692 100644
--- a/notebook/gateway/handlers.py
+++ b/notebook/gateway/handlers.py
@@ -68,7 +68,7 @@ def initialize(self):
     def get(self, kernel_id, *args, **kwargs):
         self.authenticate()
         self.kernel_id = cast_unicode(kernel_id, 'ascii')
-        yield super(WebSocketChannelsHandler, self).get(kernel_id=kernel_id, *args, **kwargs)
+        yield super().get(kernel_id=kernel_id, *args, **kwargs)
 
     def send_ping(self):
         if self.ws_connection is None and self.ping_callback is not None:
@@ -97,7 +97,7 @@ def write_message(self, message, binary=False):
         if self.ws_connection:  # prevent WebSocketClosedError
             if isinstance(message, bytes):
                 binary = True
-            super(WebSocketChannelsHandler, self).write_message(message, binary=binary)
+            super().write_message(message, binary=binary)
         elif self.log.isEnabledFor(logging.DEBUG):
             msg_summary = WebSocketChannelsHandler._get_message_summary(json_decode(utf8(message)))
             self.log.debug("Notebook client closed websocket connection - message dropped: {}".format(msg_summary))
@@ -105,7 +105,7 @@ def write_message(self, message, binary=False):
     def on_close(self):
         self.log.debug("Closing websocket connection %s", self.request.path)
         self.gateway.on_close()
-        super(WebSocketChannelsHandler, self).on_close()
+        super().on_close()
 
     @staticmethod
     def _get_message_summary(message):
@@ -129,7 +129,7 @@ class GatewayWebSocketClient(LoggingConfigurable):
     """Proxy web socket connection to a kernel/enterprise gateway."""
 
     def __init__(self, **kwargs):
-        super(GatewayWebSocketClient, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.kernel_id = None
         self.ws = None
         self.ws_future = Future()
diff --git a/notebook/gateway/managers.py b/notebook/gateway/managers.py
index 30382e8c0e..856cea494e 100644
--- a/notebook/gateway/managers.py
+++ b/notebook/gateway/managers.py
@@ -205,7 +205,7 @@ def validate_cert_default(self):
         return bool(os.environ.get(self.validate_cert_env, str(self.validate_cert_default_value)) not in ['no', 'false'])
 
     def __init__(self, **kwargs):
-        super(GatewayClient, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self._static_args = {}  # initialized on first use
 
     env_whitelist_default_value = ''
@@ -310,7 +310,7 @@ class GatewayKernelManager(MappingKernelManager):
     _kernels = {}
 
     def __init__(self, **kwargs):
-        super(GatewayKernelManager, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.base_endpoint = url_path_join(GatewayClient.instance().url, GatewayClient.instance().kernels_endpoint)
 
     def __contains__(self, kernel_id):
@@ -507,7 +507,7 @@ def shutdown_all(self, now=False):
 class GatewayKernelSpecManager(KernelSpecManager):
 
     def __init__(self, **kwargs):
-        super(GatewayKernelSpecManager, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         base_endpoint = url_path_join(GatewayClient.instance().url,
                                       GatewayClient.instance().kernelspecs_endpoint)
 
diff --git a/notebook/jstest.py b/notebook/jstest.py
index 6849c9fd04..0447af8a54 100644
--- a/notebook/jstest.py
+++ b/notebook/jstest.py
@@ -45,7 +45,7 @@ class StreamCapturer(Thread):
     daemon = True  # Don't hang if main thread crashes
     started = False
     def __init__(self, echo=False):
-        super(StreamCapturer, self).__init__()
+        super().__init__()
         self.echo = echo
         self.streams = []
         self.buffer = BytesIO()
@@ -264,14 +264,14 @@ def launch(self, buffer_output):
         # If the engine is SlimerJS, we need to buffer the output because
         # SlimerJS does not support exit codes, so CasperJS always returns 0.
         if self.engine == 'slimerjs' and not buffer_output:
-            return super(JSController, self).launch(capture_output=True)
+            return super().launch(capture_output=True)
 
         else:
-            return super(JSController, self).launch(buffer_output=buffer_output)
+            return super().launch(buffer_output=buffer_output)
 
     def wait(self, *pargs, **kwargs):
         """Wait for the JSController to finish"""
-        ret = super(JSController, self).wait(*pargs, **kwargs)
+        ret = super().wait(*pargs, **kwargs)
         # If this is a SlimerJS controller, check the captured stdout for
         # errors.  Otherwise, just return the return code.
         if self.engine == 'slimerjs':
diff --git a/notebook/nbconvert/handlers.py b/notebook/nbconvert/handlers.py
index faa1a6931e..24a3f093fb 100644
--- a/notebook/nbconvert/handlers.py
+++ b/notebook/nbconvert/handlers.py
@@ -83,8 +83,7 @@ class NbconvertFileHandler(IPythonHandler):
     def content_security_policy(self):
         # In case we're serving HTML/SVG, confine any Javascript to a unique
         # origin so it can't interact with the notebook server.
-        return super(NbconvertFileHandler, self).content_security_policy + \
-               "; sandbox allow-scripts"
+        return super().content_security_policy + "; sandbox allow-scripts"
 
     @web.authenticated
     @gen.coroutine
@@ -158,8 +157,7 @@ class NbconvertPostHandler(IPythonHandler):
     def content_security_policy(self):
         # In case we're serving HTML/SVG, confine any Javascript to a unique
         # origin so it can't interact with the notebook server.
-        return super(NbconvertPostHandler, self).content_security_policy + \
-               "; sandbox allow-scripts"
+        return super().content_security_policy + "; sandbox allow-scripts"
 
     @web.authenticated
     def post(self, format):
diff --git a/notebook/nbextensions.py b/notebook/nbextensions.py
index c6dad116b1..223aeff0e5 100644
--- a/notebook/nbextensions.py
+++ b/notebook/nbextensions.py
@@ -980,7 +980,7 @@ class NBExtensionApp(BaseExtensionApp):
 
     def start(self):
         """Perform the App's functions as configured"""
-        super(NBExtensionApp, self).start()
+        super().start()
 
         # The above should have called a subcommand and raised NoStart; if we
         # get here, it didn't, so we should self.log.info a message.
diff --git a/notebook/notebookapp.py b/notebook/notebookapp.py
index dc7c84c572..43f3d7f5e0 100755
--- a/notebook/notebookapp.py
+++ b/notebook/notebookapp.py
@@ -190,7 +190,7 @@ def __init__(self, jupyter_app, kernel_manager, contents_manager,
         if settings['autoreload']:
             log.info('Autoreload enabled: the webapp will restart when any Python src file changes.')
 
-        super(NotebookWebApplication, self).__init__(handlers, **settings)
+        super().__init__(handlers, **settings)
 
     def init_settings(self, jupyter_app, kernel_manager, contents_manager,
                       session_manager, kernel_spec_manager,
@@ -511,7 +511,7 @@ class NbserverStopApp(JupyterApp):
         help="UNIX socket of the server to be killed.")
 
     def parse_command_line(self, argv=None):
-        super(NbserverStopApp, self).parse_command_line(argv)
+        super().parse_command_line(argv)
         if self.extra_args:
             try:
                 self.port = int(self.extra_args[0])
@@ -1523,7 +1523,7 @@ def _update_server_extensions(self, change):
     terminals_available = False
 
     def parse_command_line(self, argv=None):
-        super(NotebookApp, self).parse_command_line(argv)
+        super().parse_command_line(argv)
 
         if self.extra_args:
             arg0 = self.extra_args[0]
@@ -2026,7 +2026,7 @@ def _init_asyncio_patch(self):
     def initialize(self, argv=None):
         self._init_asyncio_patch()
 
-        super(NotebookApp, self).initialize(argv)
+        super().initialize(argv)
         self.init_logging()
         if self._dispatching:
             return
@@ -2192,7 +2192,7 @@ def start(self):
         This method takes no arguments so all configuration and initialization
         must be done prior to calling this method."""
 
-        super(NotebookApp, self).start()
+        super().start()
 
         if not self.allow_root:
             # check if we are running as root, and abort if it's not allowed
diff --git a/notebook/serverextensions.py b/notebook/serverextensions.py
index 7ca1fb03b2..0e3084a92f 100644
--- a/notebook/serverextensions.py
+++ b/notebook/serverextensions.py
@@ -291,7 +291,7 @@ class ServerExtensionApp(BaseExtensionApp):
 
     def start(self):
         """Perform the App's actions as configured"""
-        super(ServerExtensionApp, self).start()
+        super().start()
 
         # The above should have called a subcommand and raised NoStart; if we
         # get here, it didn't, so we should self.log.info a message.
diff --git a/notebook/services/contents/largefilemanager.py b/notebook/services/contents/largefilemanager.py
index a2b27ed99d..6779a0b5c2 100644
--- a/notebook/services/contents/largefilemanager.py
+++ b/notebook/services/contents/largefilemanager.py
@@ -27,7 +27,7 @@ def save(self, model, path=''):
                 if chunk == 1:
                     self.log.debug("Saving %s", os_path)
                     self.run_pre_save_hook(model=model, path=path)
-                    super(LargeFileManager, self)._save_file(os_path, model['content'], model.get('format'))
+                    super()._save_file(os_path, model['content'], model.get('format'))
                 else:
                     self._save_large_file(os_path, model['content'], model.get('format'))
             except web.HTTPError:
@@ -43,7 +43,7 @@ def save(self, model, path=''):
                 self.run_post_save_hook(model=model, os_path=os_path)
             return model
         else:
-            return super(LargeFileManager, self).save(model, path)
+            return super().save(model, path)
 
     def _save_large_file(self, os_path, content, format):
         """Save content of a generic file."""
diff --git a/notebook/services/kernels/handlers.py b/notebook/services/kernels/handlers.py
index bca99ce1b1..73da737b15 100644
--- a/notebook/services/kernels/handlers.py
+++ b/notebook/services/kernels/handlers.py
@@ -190,7 +190,7 @@ def _finish_kernel_info(self, info):
             self._kernel_info_future.set_result(info)
     
     def initialize(self):
-        super(ZMQChannelsHandler, self).initialize()
+        super().initialize()
         self.zmq_stream = None
         self.channels = {}
         self.kernel_id = None
@@ -212,7 +212,7 @@ def initialize(self):
     @gen.coroutine
     def pre_get(self):
         # authenticate first
-        super(ZMQChannelsHandler, self).pre_get()
+        super().pre_get()
         # check session collision:
         yield self._register_session()
         # then request kernel info, waiting up to a certain time before giving up.
@@ -236,7 +236,7 @@ def give_up():
     @gen.coroutine
     def get(self, kernel_id):
         self.kernel_id = cast_unicode(kernel_id, 'ascii')
-        yield super(ZMQChannelsHandler, self).get(kernel_id=kernel_id)
+        yield super().get(kernel_id=kernel_id)
     
     @gen.coroutine
     def _register_session(self):
@@ -254,7 +254,7 @@ def _register_session(self):
         self._open_sessions[self.session_key] = self
 
     def open(self, kernel_id):
-        super(ZMQChannelsHandler, self).open()
+        super().open()
         km = self.kernel_manager
         km.notify_connect(kernel_id)
 
@@ -419,10 +419,10 @@ def write_stderr(error_message):
                 self._iopub_window_byte_count -= byte_count
                 self._iopub_window_byte_queue.pop(-1)
                 return
-        super(ZMQChannelsHandler, self)._on_zmq_reply(stream, msg)
+        super()._on_zmq_reply(stream, msg)
 
     def close(self):
-        super(ZMQChannelsHandler, self).close()
+        super().close()
         return self._close_future
 
     def on_close(self):
diff --git a/notebook/services/sessions/tests/test_sessionmanager.py b/notebook/services/sessions/tests/test_sessionmanager.py
index 97331ebf9b..719bbaef70 100644
--- a/notebook/services/sessions/tests/test_sessionmanager.py
+++ b/notebook/services/sessions/tests/test_sessionmanager.py
@@ -21,7 +21,7 @@ def __init__(self, kernel_name='python'):
 class DummyMKM(MappingKernelManager):
     """MappingKernelManager interface that doesn't start kernels, for testing"""
     def __init__(self, *args, **kwargs):
-        super(DummyMKM, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.id_letters = iter(u'ABCDEFGHIJK')
 
     def _new_id(self):
diff --git a/notebook/terminal/handlers.py b/notebook/terminal/handlers.py
index dd305a75b8..c201f56077 100644
--- a/notebook/terminal/handlers.py
+++ b/notebook/terminal/handlers.py
@@ -33,14 +33,14 @@ def get(self, *args, **kwargs):
             raise web.HTTPError(403)
         if not args[0] in self.term_manager.terminals:
             raise web.HTTPError(404)
-        return super(TermSocket, self).get(*args, **kwargs)
+        return super().get(*args, **kwargs)
 
     def on_message(self, message):
-        super(TermSocket, self).on_message(message)
+        super().on_message(message)
         self._update_activity()
 
     def write_message(self, message, binary=False):
-        super(TermSocket, self).write_message(message, binary=binary)
+        super().write_message(message, binary=binary)
         self._update_activity()
 
     def _update_activity(self):
diff --git a/notebook/terminal/terminalmanager.py b/notebook/terminal/terminalmanager.py
index 0521b6a848..c1bdecd8db 100644
--- a/notebook/terminal/terminalmanager.py
+++ b/notebook/terminal/terminalmanager.py
@@ -39,7 +39,7 @@ class TerminalManager(LoggingConfigurable, NamedTermManager):
     # Methods for managing terminals
     # -------------------------------------------------------------------------
     def __init__(self, *args, **kwargs):
-        super(TerminalManager, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def create(self):
         """Create a new terminal."""
@@ -73,7 +73,7 @@ def list(self):
     async def terminate(self, name, force=False):
         """Terminate terminal 'name'."""
         self._check_terminal(name)
-        await super(TerminalManager, self).terminate(name, force=force)
+        await super().terminate(name, force=force)
 
         # Decrease the metric below by one
         # because a terminal has been shutdown
diff --git a/notebook/tests/test_gateway.py b/notebook/tests/test_gateway.py
index bc42014e44..2bf0089ca8 100644
--- a/notebook/tests/test_gateway.py
+++ b/notebook/tests/test_gateway.py
@@ -161,7 +161,7 @@ def get_argv(cls):
     def setUp(self):
         kwargs = dict()
         GatewayClient.instance().load_connection_args(**kwargs)
-        super(TestGateway, self).setUp()
+        super().setUp()
 
     def test_gateway_options(self):
         nt.assert_equal(self.notebook.gateway_config.gateway_enabled, True)
diff --git a/notebook/tests/test_notebookapp.py b/notebook/tests/test_notebookapp.py
index d8543feed9..58bd7261b7 100644
--- a/notebook/tests/test_notebookapp.py
+++ b/notebook/tests/test_notebookapp.py
@@ -142,7 +142,7 @@ def test_notebook_password():
 class TestingStopApp(notebookapp.NbserverStopApp):
     """For testing the logic of NbserverStopApp."""
     def __init__(self, **kwargs):
-        super(TestingStopApp, self).__init__(**kwargs)
+        super().__init__(**kwargs)
         self.servers_shut_down = []
 
     def shutdown_server(self, server):
diff --git a/notebook/tests/test_serverextensions.py b/notebook/tests/test_serverextensions.py
index d279b81b3e..9c2bf95dde 100644
--- a/notebook/tests/test_serverextensions.py
+++ b/notebook/tests/test_serverextensions.py
@@ -159,7 +159,7 @@ class TestOrderedServerExtension(MockEnvTestCase):
     """
 
     def setUp(self):
-        super(TestOrderedServerExtension, self).setUp()
+        super().setUp()
         mockextension1 = SimpleNamespace()
         mockextension2 = SimpleNamespace()
 
@@ -179,7 +179,7 @@ def load_jupyter_server_extension(obj):
         sys.modules['mockextension1'] = mockextension1
 
     def tearDown(self):
-        super(TestOrderedServerExtension, self).tearDown()
+        super().tearDown()
         del sys.modules['mockextension2']
         del sys.modules['mockextension1']