diff --git a/lldb/examples/summaries/cocoa/cache.py b/lldb/examples/summaries/cocoa/cache.py
index 066829d..63915cc 100644
--- a/lldb/examples/summaries/cocoa/cache.py
+++ b/lldb/examples/summaries/cocoa/cache.py
@@ -7,29 +7,30 @@
 """
 import lldb.formatters.metrics
 
+
 class Cache:
-	def __init__(self):
-		self.data = {}
-		self.statistics = lldb.formatters.metrics.Metrics()
-		self.statistics.add_metric('hit')
-		self.statistics.add_metric('miss')
 
-	def look_for_key(self,key):
-		if key in self.data:
-			return True
-		return False
+    def __init__(self):
+        self.data = {}
+        self.statistics = lldb.formatters.metrics.Metrics()
+        self.statistics.add_metric('hit')
+        self.statistics.add_metric('miss')
 
-	def add_item(self,key,value,ok_to_replace=True):
-		if not(ok_to_replace) and self.look_for_key(key):
-			return False
-		self.data[key] = value
-		return True
+    def look_for_key(self, key):
+        if key in self.data:
+            return True
+        return False
 
-	def get_value(self,key,default=None):
-		if self.look_for_key(key):
-			self.statistics.metric_hit('hit',key)
-			return self.data[key]
-		else:
-			self.statistics.metric_hit('miss',key)
-			return default
+    def add_item(self, key, value, ok_to_replace=True):
+        if not(ok_to_replace) and self.look_for_key(key):
+            return False
+        self.data[key] = value
+        return True
 
+    def get_value(self, key, default=None):
+        if self.look_for_key(key):
+            self.statistics.metric_hit('hit', key)
+            return self.data[key]
+        else:
+            self.statistics.metric_hit('miss', key)
+            return default