1 files changed, 15 insertions, 16 deletions
diff --git a/pylint/checkers/classes.py b/pylint/checkers/classes.py
index 543b27ecf..d75107136 100644
--- a/pylint/checkers/classes.py
+++ b/pylint/checkers/classes.py
@@ -32,38 +32,37 @@
 from __future__ import generators
 
 import collections
-from itertools import chain, zip_longest
 import sys
+from itertools import chain, zip_longest
 
 import astroid
-from astroid.bases import Generator, BUILTINS
-from astroid.exceptions import InconsistentMroError, DuplicateBasesError
-from astroid import decorators
-from astroid import objects
+from astroid import decorators, objects
+from astroid.bases import BUILTINS, Generator
+from astroid.exceptions import DuplicateBasesError, InconsistentMroError
 from astroid.scoped_nodes import function_to_method
-from pylint.interfaces import IAstroidChecker
+
 from pylint.checkers import BaseChecker
 from pylint.checkers.utils import (
     PYMETHODS,
     SPECIAL_METHODS_PARAMS,
-    overrides_a_method,
     check_messages,
+    class_is_abstract,
+    decorated_with,
+    decorated_with_property,
+    has_known_bases,
     is_attr_private,
     is_attr_protected,
-    node_frame_class,
     is_builtin_object,
-    decorated_with_property,
-    unimplemented_abstract_methods,
-    decorated_with,
-    class_is_abstract,
-    safe_infer,
-    has_known_bases,
-    is_iterable,
     is_comprehension,
+    is_iterable,
+    node_frame_class,
+    overrides_a_method,
+    safe_infer,
+    unimplemented_abstract_methods,
 )
+from pylint.interfaces import IAstroidChecker
 from pylint.utils import get_global_option
 
-
 if sys.version_info >= (3, 0):
     NEXT_METHOD = "__next__"
 else: