diff --git a/jupyterhub/handlers/pages.py b/jupyterhub/handlers/pages.py
index c9a15d6a..c079b3b9 100644
--- a/jupyterhub/handlers/pages.py
+++ b/jupyterhub/handlers/pages.py
@@ -10,10 +10,11 @@ from datetime import datetime
 from http.client import responses
 
 from jinja2 import TemplateNotFound
+from python_paginate.web.tornado_paginate import Pagination
 from tornado import gen
 from tornado import web
-from tornado.httputil import url_concat, urlparse
-from python_paginate.web.tornado_paginate import Pagination
+from tornado.httputil import url_concat
+from tornado.httputil import urlparse
 
 from .. import __version__
 from .. import orm
@@ -407,9 +408,9 @@ class AdminHandler(BaseHandler):
 
         page, per_page, offset = Pagination.get_page_args(self)
         _per_page = self.get_arguments("per_page")
-        # No arg called per_page in the URL, 
+        # No arg called per_page in the URL,
         # avoiding default value from the python_paginate lib
-        if per_page==10 and len(_per_page)==0: 
+        if per_page == 10 and len(_per_page) == 0:
             per_page = DEFAULT_PER_PAGE
 
         available = {'name', 'admin', 'running', 'last_activity'}
@@ -452,7 +453,13 @@ class AdminHandler(BaseHandler):
         # get User.col.desc() order objects
         ordered = [getattr(c, o)() for c, o in zip(cols, orders)]
 
-        users = self.db.query(orm.User).outerjoin(orm.Spawner).order_by(*ordered).limit(per_page).offset(offset)
+        users = (
+            self.db.query(orm.User)
+            .outerjoin(orm.Spawner)
+            .order_by(*ordered)
+            .limit(per_page)
+            .offset(offset)
+        )
         users = [self._user_from_orm(u) for u in users]
         from itertools import chain
 
@@ -461,10 +468,14 @@ class AdminHandler(BaseHandler):
             running.extend(s for s in u.spawners.values() if s.active)
 
         total = self.db.query(orm.User.id).count()
-        pagination = Pagination(url=self.request.uri, total=total, record_name='users', 
-        display_msg = 'Displaying {record_name} <b>{start} - {end}</b>. Total {record_name}: {total}',
-        page=page, per_page=per_page)
-
+        pagination = Pagination(
+            url=self.request.uri,
+            total=total,
+            record_name='users',
+            display_msg='Displaying {record_name} <b>{start} - {end}</b>. Total {record_name}: {total}',
+            page=page,
+            per_page=per_page,
+        )
 
         auth_state = await self.current_user.get_auth_state()
         html = self.render_template(
@@ -479,7 +490,7 @@ class AdminHandler(BaseHandler):
             allow_named_servers=self.allow_named_servers,
             named_server_limit_per_user=self.named_server_limit_per_user,
             server_version='{} {}'.format(__version__, self.version_hash),
-            pagination=pagination
+            pagination=pagination,
         )
         self.finish(html)
 
diff --git a/requirements.txt b/requirements.txt
index a6cdb504..74215f5a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,8 +9,8 @@ pamela
 prometheus_client>=0.0.21
 psutil>=5.6.5; sys_platform == 'win32'
 python-dateutil
+python-paginate
 requests
 SQLAlchemy>=1.1
 tornado>=5.0
 traitlets>=4.3.2
-python-paginate
\ No newline at end of file