From 40fb04943f649eed807aa88a9bd40511cf07d6bf Mon Sep 17 00:00:00 2001
From: qiaolongfei <qiaolongfei@baidu.com>
Date: Thu, 27 Sep 2018 22:45:21 +0800
Subject: [PATCH] add comment to py_reader_by_data

---
 python/paddle/fluid/layers/io.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/python/paddle/fluid/layers/io.py b/python/paddle/fluid/layers/io.py
index 90b11926c..b4da940aa 100644
--- a/python/paddle/fluid/layers/io.py
+++ b/python/paddle/fluid/layers/io.py
@@ -755,6 +755,10 @@ def py_reader(capacity,
 
 
 def py_reader_by_data(capacity, feed_list, name=None, use_double_buffer=True):
+    """
+    Works much like py_reader except that it's input is feed_list
+    instead of shapes, dtypes, lod_levels
+    """
     return _py_reader(
         capacity=capacity,
         shapes=None,
-- 
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