diff --git a/serial/serialposix.py b/serial/serialposix.py
index 44cadf2..7e432c7 100644
--- a/serial/serialposix.py
+++ b/serial/serialposix.py
@@ -492,7 +492,9 @@
                     # Disconnected devices, at least on Linux, show the
                     # behavior that they are always ready to read immediately
                     # but reading returns nothing.
-                    raise SerialException('device reports readiness to read but returned no data (device disconnected or multiple access on port?)')
+                    raise SerialException(
+                        'device reports readiness to read but returned no data '
+                        '(device disconnected or multiple access on port?)')
                 read.extend(buf)
                 if timeout is not None:
                     timeout -= time.time() - start_time
diff --git a/serial/tools/hexlify_codec.py b/serial/tools/hexlify_codec.py
index fac85db..6d42080 100644
--- a/serial/tools/hexlify_codec.py
+++ b/serial/tools/hexlify_codec.py
@@ -15,8 +15,8 @@
 
 HEXDIGITS = '0123456789ABCDEF'
 
-### Codec APIs
 
+# Codec APIs
 
 def hex_encode(input, errors='strict'):
     return (serial.to_bytes([int(h, 16) for h in input.split()]), len(input))
@@ -84,7 +84,8 @@
     pass
 
 
-### encodings module API
+# encodings module API
+
 def getregentry():
     return codecs.CodecInfo(
         name='hexlify',
diff --git a/serial/tools/list_ports_common.py b/serial/tools/list_ports_common.py
index 640b2a1..ae43d2d 100644
--- a/serial/tools/list_ports_common.py
+++ b/serial/tools/list_ports_common.py
@@ -56,8 +56,7 @@
                 self.vid,
                 self.pid,
                 ' SER={}'.format(self.serial_number) if self.serial_number is not None else '',
-                ' LOCATION={}'.format(self.location) if self.location is not None else '',
-                )
+                ' LOCATION={}'.format(self.location) if self.location is not None else '')
 
     def apply_usb_info(self):
         """update description and hwid from USB data"""
diff --git a/serial/tools/miniterm.py b/serial/tools/miniterm.py
index 65a5031..b55c3bb 100644
--- a/serial/tools/miniterm.py
+++ b/serial/tools/miniterm.py
@@ -757,16 +757,14 @@
             type=int,
             metavar='NUM',
             help="Unicode of special character that is used to exit the application, default: %(default)s",
-            default=0x1d  # GS/CTRL+]
-            )
+            default=0x1d)  # GS/CTRL+]
 
     group.add_argument(
             "--menu-char",
             type=int,
             metavar='NUM',
             help="Unicode code of special character that is used to control miniterm (menu), default: %(default)s",
-            default=0x14  # Menu: CTRL+T
-            )
+            default=0x14)  # Menu: CTRL+T
 
     group = parser.add_argument_group("diagnostics")
 
@@ -859,8 +857,7 @@
                 key_description(miniterm.exit_character),
                 key_description(miniterm.menu_character),
                 key_description(miniterm.menu_character),
-                key_description('\x08'),
-                ))
+                key_description('\x08')))
 
     miniterm.start()
     try:
diff --git a/serial/urlhandler/protocol_loop.py b/serial/urlhandler/protocol_loop.py
index ab6c0b0..cce9f7d 100644
--- a/serial/urlhandler/protocol_loop.py
+++ b/serial/urlhandler/protocol_loop.py
@@ -90,7 +90,7 @@
         protocol all settings are ignored!
         """
         # not that's it of any real use, but it helps in the unit tests
-        if not isinstance(self._baudrate, numbers.Integral) or not 0 < self._baudrate < 2**32:
+        if not isinstance(self._baudrate, numbers.Integral) or not 0 < self._baudrate < 2 ** 32:
             raise ValueError("invalid baudrate: %r" % (self._baudrate))
         if self.logger:
             self.logger.info('_reconfigure_port()')
diff --git a/serial/urlhandler/protocol_spy.py b/serial/urlhandler/protocol_spy.py
index ba09e80..54bd55e 100644
--- a/serial/urlhandler/protocol_spy.py
+++ b/serial/urlhandler/protocol_spy.py
@@ -61,9 +61,7 @@
     offset = 0
     for h, a in sixteen(data):
         if h is None:
-            yield (offset, ' '.join([
-                    ''.join(values),
-                    ''.join(ascii)]))
+            yield (offset, ' '.join([''.join(values), ''.join(ascii)]))
             del values[:]
             del ascii[:]
             offset += 0x10
@@ -162,7 +160,10 @@
         """extract host and port from an URL string"""
         parts = urlparse.urlsplit(url)
         if parts.scheme != 'spy':
-            raise serial.SerialException('expected a string in the form "spy://port[?option[=value][&option[=value]]]": not starting with spy:// (%r)' % (parts.scheme,))
+            raise serial.SerialException(
+                'expected a string in the form '
+                '"spy://port[?option[=value][&option[=value]]]": '
+                'not starting with spy:// (%r)' % (parts.scheme,))
         # process options now, directly altering self
         formatter = FormatHexdump
         color = False
@@ -180,7 +181,9 @@
                 else:
                     raise ValueError('unknown option: %r' % (option,))
         except ValueError as e:
-            raise serial.SerialException('expected a string in the form "spy://port[?option[=value][&option[=value]]]": %s' % e)
+            raise serial.SerialException(
+                'expected a string in the form '
+                '"spy://port[?option[=value][&option[=value]]]": %s' % e)
         self.formatter = formatter(output, color)
         return ''.join([parts.netloc, parts.path])