pre-commit: run black with string normalization

integration-tests/plugins/simplest/tljh_simplest.py

@@ -7,49 +7,49 @@ from tljh.hooks import hookimpl
 @hookimpl
 def tljh_extra_user_conda_packages():
     return [
-        'hypothesis',
+        "hypothesis",
     ]
 
 
 @hookimpl
 def tljh_extra_user_pip_packages():
     return [
-        'django',
+        "django",
     ]
 
 
 @hookimpl
 def tljh_extra_hub_pip_packages():
     return [
-        'there',
+        "there",
     ]
 
 
 @hookimpl
 def tljh_extra_apt_packages():
     return [
-        'sl',
+        "sl",
     ]
 
 
 @hookimpl
 def tljh_config_post_install(config):
     # Put an arbitrary marker we can test for
-    config['simplest_plugin'] = {'present': True}
+    config["simplest_plugin"] = {"present": True}
 
 
 @hookimpl
 def tljh_custom_jupyterhub_config(c):
-    c.JupyterHub.authenticator_class = 'tmpauthenticator.TmpAuthenticator'
+    c.JupyterHub.authenticator_class = "tmpauthenticator.TmpAuthenticator"
 
 
 @hookimpl
 def tljh_post_install():
-    with open('test_post_install', 'w') as f:
-        f.write('123456789')
+    with open("test_post_install", "w") as f:
+        f.write("123456789")
 
 
 @hookimpl
 def tljh_new_user_create(username):
-    with open('test_new_user_create', 'w') as f:
+    with open("test_new_user_create", "w") as f:
         f.write(username)