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python/paddle/v2/reader/decorator.py

@@ -14,7 +14,7 @@
 
 __all__ = [
     'map_readers', 'buffered', 'compose', 'chain', 'shuffle',
-    'ComposeNotAligned', 'firstn', 'xmap_readers', 'pipe_reader'
+    'ComposeNotAligned', 'firstn', 'xmap_readers', 'PipeReader'
 ]
 
 from threading import Thread

python/paddle/v2/reader/tests/decorator_test.py

@@ -147,8 +147,11 @@ class TestXmap(unittest.TestCase):
 
 class TestPipeReader(unittest.TestCase):
     def test_pipe_reader(self):
-        def simple_parser(lines):
-            return lines
+        def example_reader(myfiles):
+            for f in myfiles:
+                pr = paddle.v2.reader.PipeReader("cat %s" % f, bufsize=128)
+                for l in pr.get_line():
+                    yield l
 
         import tempfile
 
@@ -159,17 +162,12 @@ class TestPipeReader(unittest.TestCase):
                 for r in records:
                     f.write('%s\n' % r)
 
-            cmd = "cat %s" % temp.name
-            reader = paddle.v2.reader.pipe_reader(
-                cmd, simple_parser, bufsize=128)
-            for i in xrange(4):
-                result = []
-                for r in reader():
-                    result.append(r)
-
-                for idx, e in enumerate(records):
-                    print e, result[idx]
-                    self.assertEqual(e, result[idx])
+            result = []
+            for r in example_reader([temp.name]):
+                result.append(r)
+
+            for idx, e in enumerate(records):
+                self.assertEqual(e, result[idx])
         finally:
             # delete the temporary file
             temp.close()