diff --git a/python/paddle/fluid/compiler.py b/python/paddle/fluid/compiler.py
index 1c194830e1b68a655865f4553ea139f199d1122f..f3935e22b45c52c18dca5d89e4e2cc5e727f500e 100644
--- a/python/paddle/fluid/compiler.py
+++ b/python/paddle/fluid/compiler.py
@@ -197,7 +197,8 @@ class CompiledProgram(object):
             self._build_strategy.trainers_endpoints = trainers_endpoints
 
         self._persistable_vars = set([
-            cpt.to_text(v.name) for v in [
+            cpt.to_text(v.name)
+            for v in [
                 var for var in self._program.list_vars()
                 if var.persistable and var.type != core.VarDesc.VarType.RAW
             ]