--- a/mercurial/keepalive.py	Thu Oct 03 14:50:47 2013 +0200
+++ b/mercurial/keepalive.py	Thu Oct 03 14:50:47 2013 +0200
@@ -499,7 +499,7 @@
         data, self._rbuf = self._rbuf[:i], self._rbuf[i:]
         return data
 
-    def readlines(self, sizehint = 0):
+    def readlines(self, sizehint=0):
         total = 0
         list = []
         while True: