diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 70035fcb..8c3bcf8c 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -3,16 +3,23 @@ trigger:
 pr:
 - master
 
-pool:
-  vmImage: 'ubuntu-latest'
 strategy:
   matrix:
-    # Python36:
-    #   python.version: '3.6'
-    Python37:
+    Python 3.7 Ubuntu:
       python.version: '3.7'
-   # Python38:
-   #   python.version: '3.8'
+      vmImage: 'ubuntu-latest'
+#    PyPy Ubuntu:
+#      python.version: pypy3
+#      vmImage: 'ubuntu-latest'
+    Python 3.7 Windows:
+      python.version: '3.7'
+      vmImage: 'windows-latest'
+    Python 3.7 OSX:
+      python.version: '3.7'
+      vmImage: 'macOS-latest'
+
+pool:
+      vmImage: $(vmImage)
 
 steps:
 - task: UsePythonVersion@0
diff --git a/kasa/cli.py b/kasa/cli.py
index dc3d9666..7201888b 100755
--- a/kasa/cli.py
+++ b/kasa/cli.py
@@ -2,8 +2,8 @@
 import asyncio
 import json
 import logging
-from pprint import pformat as pf
 import re
+from pprint import pformat as pf
 
 import click
 
diff --git a/kasa/smartdevice.py b/kasa/smartdevice.py
index 7cb39bf8..1a02ca31 100755
--- a/kasa/smartdevice.py
+++ b/kasa/smartdevice.py
@@ -11,12 +11,12 @@ Stroetmann which is licensed under the Apache License, Version 2.0.
 You may obtain a copy of the license at
 http://www.apache.org/licenses/LICENSE-2.0
 """
-from collections import defaultdict
-from datetime import datetime, timedelta
-from enum import Enum
 import functools
 import inspect
 import logging
+from collections import defaultdict
+from datetime import datetime, timedelta
+from enum import Enum
 from typing import Any, Dict, Optional
 
 from kasa.protocol import TPLinkSmartHomeProtocol
diff --git a/kasa/smartstrip.py b/kasa/smartstrip.py
index 36811b3a..27ca8817 100755
--- a/kasa/smartstrip.py
+++ b/kasa/smartstrip.py
@@ -2,9 +2,9 @@
 
 .. todo:: describe how this interfaces with single plugs.
 """
-from collections import defaultdict
 import datetime
 import logging
+from collections import defaultdict
 from typing import Any, DefaultDict, Dict, List, Optional
 
 from kasa.smartdevice import (