diff --git a/dvc/external_repo.py b/dvc/external_repo.py
index 1216e836c..2b24735b6 100644
--- a/dvc/external_repo.py
+++ b/dvc/external_repo.py
@@ -4,10 +4,9 @@ import os
 import tempfile
 from contextlib import contextmanager
 from distutils.dir_util import copy_tree
-
-from dvc.remote import RemoteConfig
 from funcy import retry
 
+from dvc.remote import RemoteConfig
 from dvc.config import NoRemoteError, ConfigError
 from dvc.exceptions import RemoteNotSpecifiedInExternalRepoError
 from dvc.exceptions import NoOutputInExternalRepoError
@@ -133,4 +132,4 @@ def _remote_config_exists(rconfig):
         default = rconfig.get_default()
     except ConfigError:
         default = None
-    return True if default else False
+    return bool(default)
diff --git a/tests/func/test_external_repo.py b/tests/func/test_external_repo.py
index d21e056a9..e6a8ee7bc 100644
--- a/tests/func/test_external_repo.py
+++ b/tests/func/test_external_repo.py
@@ -1,8 +1,8 @@
 import os
 
-from dvc.repo import Repo
 from mock import patch
 
+from dvc.repo import Repo
 from dvc.external_repo import external_repo
 from dvc.scm.git import Git
 from dvc.utils.fs import path_isin