[SPARK-2470] PEP8 fixes to storagelevel.py

Author: nchammas

python/pyspark/storagelevel.py

@@ -17,6 +17,7 @@
 
 __all__ = ["StorageLevel"]
 
+
 class StorageLevel:
     """
     Flags for controlling the storage of an RDD. Each StorageLevel records whether to use memory,
@@ -25,7 +26,7 @@ class StorageLevel:
     Also contains static constants for some commonly used storage levels, such as MEMORY_ONLY.
     """
 
-    def __init__(self, useDisk, useMemory, useOffHeap, deserialized, replication = 1):
+    def __init__(self, useDisk, useMemory, useOffHeap, deserialized, replication=1):
         self.useDisk = useDisk
         self.useMemory = useMemory
         self.useOffHeap = useOffHeap
@@ -55,4 +56,4 @@ def __str__(self):
 StorageLevel.MEMORY_AND_DISK_2 = StorageLevel(True, True, False, True, 2)
 StorageLevel.MEMORY_AND_DISK_SER = StorageLevel(True, True, False, False)
 StorageLevel.MEMORY_AND_DISK_SER_2 = StorageLevel(True, True, False, False, 2)
-StorageLevel.OFF_HEAP = StorageLevel(False, False, True, False, 1)
+StorageLevel.OFF_HEAP = StorageLevel(False, False, True, False, 1)