add param_attr parameter for img_conv_groups(...) in /python/trainer_config_helpers/networks.py

python/paddle/trainer_config_helpers/networks.py

@@ -340,24 +340,40 @@ def img_conv_group(input,
                    conv_with_batchnorm=False,
                    conv_batchnorm_drop_rate=0,
                    pool_stride=1,
-                   pool_type=None):
+                   pool_type=None,
+                   param_attr=None):
     """
     Image Convolution Group, Used for vgg net.
 
-    TODO(yuyang18): Complete docs
-
-    :param conv_batchnorm_drop_rate:
-    :param input:
-    :param conv_num_filter:
-    :param pool_size:
-    :param num_channels:
-    :param conv_padding:
-    :param conv_filter_size:
-    :param conv_act:
-    :param conv_with_batchnorm:
-    :param pool_stride:
-    :param pool_type:
-    :return:
+    :param conv_batchnorm_drop_rate: if conv_with_batchnorm[i] is true,
+        conv_batchnorm_drop_rate[i] represents the drop rate of each batch norm.
+    :type conv_batchnorm_drop_rate: list
+    :param input: layer's input.
+    :type input: LayerOutput
+    :param conv_num_filter: output channels num.
+    :type conv_num_filter: int
+    :param pool_size: pooling filter size.
+    :type pool_size: int
+    :param num_channels: input channels num.
+    :type num_channels: int
+    :param conv_padding: convolution padding size.
+    :type conv_padding: int
+    :param conv_filter_size: convolution filter size.
+    :type conv_filter_size: int
+    :param conv_act: activation funciton after convolution.
+    :type conv_act: BaseActivation
+    :param conv_with_batchnorm: conv_with_batchnorm[i] represents
+        if there is a batch normalization after each convolution.
+    :type conv_with_batchnorm: list
+    :param pool_stride: pooling stride size.
+    :type pool_stride: int
+    :param pool_type: pooling type.
+    :type pool_type: BasePoolingType
+    :param param_attr: Convolution param attribute.
+        None means default attribute.
+    :type param_attr: ParameterAttribute
+    :return: Layer's output
+    :type: LayerOutput
     """
     tmp = input
 
@@ -397,6 +413,7 @@ def __extend_list__(obj):
             padding=conv_padding[i],
             filter_size=conv_filter_size[i],
             num_filters=conv_num_filter[i],
+            param_attr=param_attr,
             **extra_kwargs)
 
         # logger.debug("tmp.num_filters = %d" % tmp.num_filters)