[1.8.x] Sorted imports with isort; refs #23860.

Backport of 0ed7d155635da9f79d4dd67e4889087d3673c6da from master

1 files changed, 3 insertions, 4 deletions

diff --git a/django/db/backends/base/base.py b/django/db/backends/base/base.py
index 5c0e8755ea..ad6b4f3df1 100644
--- a/django/db/backends/base/base.py
+++ b/django/db/backends/base/base.py
@@ -1,18 +1,17 @@
-from collections import deque
-from contextlib import contextmanager
 import time
 import warnings
+from collections import deque
+from contextlib import contextmanager
 
 from django.conf import settings
 from django.db import DEFAULT_DB_ALIAS
-from django.db.backends.signals import connection_created
 from django.db.backends import utils
+from django.db.backends.signals import connection_created
 from django.db.transaction import TransactionManagementError
 from django.db.utils import DatabaseError, DatabaseErrorWrapper
 from django.utils.functional import cached_property
 from django.utils.six.moves import _thread as thread
 
-
 NO_DB_ALIAS = '__no_db__'