style: some of the suggestions from flake8
diff --git a/serial/__init__.py b/serial/__init__.py
index 4f222f3..38c267b 100644
--- a/serial/__init__.py
+++ b/serial/__init__.py
@@ -31,8 +31,8 @@
 
 
 protocol_handler_packages = [
-        'serial.urlhandler',
-        ]
+    'serial.urlhandler',
+]
 
 
 def serial_for_url(url, *args, **kwargs):