diff --git a/src/wxflow/__init__.py b/src/wxflow/__init__.py
index 9a94733..6da713d 100644
--- a/src/wxflow/__init__.py
+++ b/src/wxflow/__init__.py
@@ -13,7 +13,8 @@
 from .task import Task
 from .template import Template, TemplateConstants
 from .timetools import *
-from .yaml_file import YAMLFile, save_as_yaml, dump_as_yaml, vanilla_yaml, parse_yaml, parse_j2yaml
+from .yaml_file import (YAMLFile, dump_as_yaml, parse_j2yaml, parse_yaml,
+                        save_as_yaml, vanilla_yaml)
 
 __docformat__ = "restructuredtext"
 __version__ = "0.1.0"
diff --git a/src/wxflow/yaml_file.py b/src/wxflow/yaml_file.py
index f6acb23..d8630aa 100644
--- a/src/wxflow/yaml_file.py
+++ b/src/wxflow/yaml_file.py
@@ -1,8 +1,8 @@
 import datetime
 import json
 import os
-import sys
 import re
+import sys
 from typing import Any, Dict, List
 
 import yaml
diff --git a/tests/test_yaml_file.py b/tests/test_yaml_file.py
index 91b8861..af6fb5c 100644
--- a/tests/test_yaml_file.py
+++ b/tests/test_yaml_file.py
@@ -3,7 +3,7 @@
 
 import pytest
 
-from wxflow import (YAMLFile, parse_j2yaml, save_as_yaml)
+from wxflow import YAMLFile, parse_j2yaml, save_as_yaml
 
 host_yaml = """
 host: