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

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

examples/bootstrap-script/jupyterhub_config.py

@@ -2,6 +2,7 @@
 Example for a Spawner.pre_spawn_hook
 create a directory for the user before the spawner starts
 """
+
 # pylint: disable=import-error
 import os
 import shutil

examples/external-oauth/whoami-oauth-basic.py

@@ -3,6 +3,7 @@
 Implements OAuth handshake manually
 so all URLs and requests necessary for OAuth with JupyterHub should be in one place
 """
+
 import json
 import os
 from urllib.parse import urlencode, urlparse

examples/service-whoami/whoami-oauth.py

@@ -4,6 +4,7 @@ This example service serves `/services/whoami-oauth/`,
 authenticated with the Hub,
 showing the user their own info.
 """
+
 import json
 import os
 from urllib.parse import urlparse

examples/service-whoami/whoami.py

@@ -4,6 +4,7 @@ This serves `/services/whoami-api/`, authenticated with the Hub, showing the use
 
 HubAuthenticated only supports token-based access.
 """
+
 import json
 import os
 from urllib.parse import urlparse

examples/spawn-form/jupyterhub_config.py

@@ -1,6 +1,7 @@
 """
 Example JupyterHub config allowing users to specify environment variables and notebook-server args
 """
+
 import shlex
 
 from jupyterhub.spawner import LocalProcessSpawner