[SPARK-2470] PEP8 fixes to serializers.py

Author: nchammas

python/pyspark/serializers.py

@@ -91,7 +91,6 @@ def load_stream(self, stream):
         """
         raise NotImplementedError
 
-
     def _load_stream_without_unbatching(self, stream):
         return self.load_stream(stream)
 
@@ -197,8 +196,8 @@ def _load_stream_without_unbatching(self, stream):
             return self.serializer.load_stream(stream)
 
     def __eq__(self, other):
-        return isinstance(other, BatchedSerializer) and \
-               other.serializer == self.serializer
+        return isinstance(other, BatchedSerializer) and
+        other.serializer == self.serializer
 
     def __str__(self):
         return "BatchedSerializer<%s>" % str(self.serializer)
@@ -229,8 +228,8 @@ def load_stream(self, stream):
                 yield pair
 
     def __eq__(self, other):
-        return isinstance(other, CartesianDeserializer) and \
-               self.key_ser == other.key_ser and self.val_ser == other.val_ser
+        return isinstance(other, CartesianDeserializer) and
+        self.key_ser == other.key_ser and self.val_ser == other.val_ser
 
     def __str__(self):
         return "CartesianDeserializer<%s, %s>" % \
@@ -252,18 +251,20 @@ def load_stream(self, stream):
                 yield pair
 
     def __eq__(self, other):
-        return isinstance(other, PairDeserializer) and \
-               self.key_ser == other.key_ser and self.val_ser == other.val_ser
+        return isinstance(other, PairDeserializer) and
+        self.key_ser == other.key_ser and self.val_ser == other.val_ser
 
     def __str__(self):
-        return "PairDeserializer<%s, %s>" % \
-               (str(self.key_ser), str(self.val_ser))
+        return "PairDeserializer<%s, %s>" % (str(self.key_ser), str(self.val_ser))
 
 
 class NoOpSerializer(FramedSerializer):
 
-    def loads(self, obj): return obj
-    def dumps(self, obj): return obj
+    def loads(self, obj):
+        return obj
+
+    def dumps(self, obj):
+        return obj
 
 
 class PickleSerializer(FramedSerializer):
@@ -276,12 +277,16 @@ class PickleSerializer(FramedSerializer):
     not be as fast as more specialized serializers.
     """
 
-    def dumps(self, obj): return cPickle.dumps(obj, 2)
+    def dumps(self, obj):
+        return cPickle.dumps(obj, 2)
+
     loads = cPickle.loads
 
+
 class CloudPickleSerializer(PickleSerializer):
 
-    def dumps(self, obj): return cloudpickle.dumps(obj, 2)
+    def dumps(self, obj):
+        return cloudpickle.dumps(obj, 2)
 
 
 class MarshalSerializer(FramedSerializer):