Merge pull request #3479 from helinwang/recordio

Fix local recordio reader

Author: helinwang

python/paddle/v2/reader/creator.py

@@ -57,7 +57,7 @@ def reader():
     return reader
 
 
-def recordio_local(paths, buf_size=100):
+def recordio(paths, buf_size=100):
     """
     Creates a data reader from given RecordIO file paths separated by ",",
         glob pattern is supported.
@@ -67,15 +67,19 @@ def recordio_local(paths, buf_size=100):
 
     import recordio as rec
     import paddle.v2.reader.decorator as dec
+    import cPickle as pickle
 
     def reader():
-        a = ','.join(paths)
-        f = rec.reader(a)
+        if isinstance(paths, basestring):
+            path = paths
+        else:
+            path = ",".join(paths)
+        f = rec.reader(path)
         while True:
             r = f.read()
             if r is None:
                 break
-            yield r
+            yield pickle.loads(r)
         f.close()
 
     return dec.buffered(reader, buf_size)

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

@@ -34,5 +34,27 @@ def test_text_file(self):
             self.assertEqual(e, str(idx * 2) + " " + str(idx * 2 + 1))
 
 
+class TestRecordIO(unittest.TestCase):
+    def do_test(self, path):
+        reader = paddle.v2.reader.creator.recordio(path)
+        idx = 0
+        for e in reader():
+            if idx == 0:
+                self.assertEqual(e, (1, 2, 3))
+            elif idx == 1:
+                self.assertEqual(e, (4, 5, 6))
+            idx += 1
+        self.assertEqual(idx, 2)
+
+    def test_recordIO(self):
+        self.do_test(
+            os.path.join(
+                os.path.dirname(__file__), "test_reader_recordio.dat"))
+        self.do_test([
+            os.path.join(
+                os.path.dirname(__file__), "test_reader_recordio.dat")
+        ])
+
+
 if __name__ == '__main__':
     unittest.main()

python/paddle/v2/reader/tests/test_reader_recordio.dat

@@ -1,7 +1,7 @@
 requests==2.9.2
 numpy>=1.12
 protobuf==3.1
-recordio
+recordio>=0.1.0
 matplotlib
 rarfile
 scipy>=0.19.0