fix the code style

python/paddle/trainer/config_parser.py

@@ -592,6 +592,7 @@ class DotMulProjection(Projection):
     def calc_parameter_dims(self, input_size, output_size):
         return [1, output_size]
 
+
 # ScalingProjection
 @config_class
 class ScalingProjection(Projection):
@@ -808,7 +809,8 @@ class BilinearInterp(Cfg):
 # please refer to the comments in proto/ModelConfig.proto
 @config_class
 class Pool(Cfg):
-    def __init__(self,
+    def __init__(
+            self,
             pool_type,
             channels,
             size_x,
@@ -1114,11 +1116,11 @@ def parse_pool(pool, input_layer_name, pool_conf):
     if pool.padding is not None:
         pool_conf.padding = pool.padding
     pool_conf.padding_y = default(pool.padding_y, pool_conf.padding)
-    pool_conf.output_x = cnn_output_size(
-        pool_conf.img_size, pool_conf.size_x, pool_conf.padding,
-        pool_conf.stride, False)
-    pool_conf.output_y = cnn_output_size(
-        pool_conf.img_size_y, pool_conf.size_y, pool_conf.padding_y,
+    pool_conf.output_x = cnn_output_size(pool_conf.img_size, pool_conf.size_x,
+                                         pool_conf.padding, pool_conf.stride,
+                                         False)
+    pool_conf.output_y = cnn_output_size(pool_conf.img_size_y, pool_conf.size_y,
+                                         pool_conf.padding_y,
                                          pool_conf.stride_y, False)