style: some of the suggestions from flake8
diff --git a/serial/__init__.py b/serial/__init__.py
index 78bdd19..4f222f3 100644
--- a/serial/__init__.py
+++ b/serial/__init__.py
@@ -23,7 +23,7 @@
     if os.name == 'nt':  # sys.platform == 'win32':
         from serial.serialwin32 import Serial
     elif os.name == 'posix':
-        from serial.serialposix import Serial, PosixPollSerial, VTIMESerial # noqa
+        from serial.serialposix import Serial, PosixPollSerial, VTIMESerial  # noqa
     elif os.name == 'java':
         from serial.serialjava import Serial
     else: