fix bug (#5233)

JiayiFeng · web-flow · commit a75437a20c45 · 2017-10-31T10:06:44.000-07:00
diff --git a/python/paddle/v2/dataset/imdb.py b/python/paddle/v2/dataset/imdb.py
@@ -116,7 +116,7 @@ def reader():
             yield [word_idx.get(w, UNK) for w in doc], i % 2
             doc = qs[i % 2].get()
 
-    return reader()
+    return reader
 
 
 def train(word_idx):
