diff --git a/sprockets/mixins/mediatype/transcoders.py b/sprockets/mixins/mediatype/transcoders.py
index 63e46e3..4c76053 100644
--- a/sprockets/mixins/mediatype/transcoders.py
+++ b/sprockets/mixins/mediatype/transcoders.py
@@ -50,8 +50,8 @@ class JSONTranscoder(handlers.TextContentHandler):
 
     def __init__(self, content_type='application/json',
                  default_encoding='utf-8'):
-        super().__init__(content_type, self.dumps,
-                                             self.loads, default_encoding)
+        super().__init__(content_type, self.dumps, self.loads,
+                         default_encoding)
         self.dump_options = {
             'default': self.dump_object,
             'separators': (',', ':'),
@@ -137,8 +137,7 @@ class MsgPackTranscoder(handlers.BinaryContentHandler):
             raise RuntimeError('Cannot import MsgPackTranscoder, '
                                'umsgpack is not available')
 
-        super().__init__(content_type, self.packb,
-                                                self.unpackb)
+        super().__init__(content_type, self.packb, self.unpackb)
 
     def packb(self, data):
         """Pack `data` into a :class:`bytes` instance."""
diff --git a/tests.py b/tests.py
index 732c013..6f59077 100644
--- a/tests.py
+++ b/tests.py
@@ -36,27 +36,27 @@ class Context:
 def pack_string(obj):
     """Optimally pack a string according to msgpack format"""
     payload = str(obj).encode('ASCII')
-    l = len(payload)
-    if l < (2 ** 5):
-        prefix = struct.pack('B', 0b10100000 | l)
-    elif l < (2 ** 8):
-        prefix = struct.pack('BB', 0xD9, l)
-    elif l < (2 ** 16):
-        prefix = struct.pack('>BH', 0xDA, l)
+    pl = len(payload)
+    if pl < (2 ** 5):
+        prefix = struct.pack('B', 0b10100000 | pl)
+    elif pl < (2 ** 8):
+        prefix = struct.pack('BB', 0xD9, pl)
+    elif pl < (2 ** 16):
+        prefix = struct.pack('>BH', 0xDA, pl)
     else:
-        prefix = struct.pack('>BI', 0xDB, l)
+        prefix = struct.pack('>BI', 0xDB, pl)
     return prefix + payload
 
 
 def pack_bytes(payload):
     """Optimally pack a byte string according to msgpack format"""
-    l = len(payload)
-    if l < (2 ** 8):
-        prefix = struct.pack('BB', 0xC4, l)
-    elif l < (2 ** 16):
-        prefix = struct.pack('>BH', 0xC5, l)
+    pl = len(payload)
+    if pl < (2 ** 8):
+        prefix = struct.pack('BB', 0xC4, pl)
+    elif pl < (2 ** 16):
+        prefix = struct.pack('>BH', 0xC5, pl)
     else:
-        prefix = struct.pack('>BI', 0xC6, l)
+        prefix = struct.pack('>BI', 0xC6, pl)
     return prefix + payload