Change the return order to h, c.

python/paddle/v2/fluid/layers/nn.py

@@ -900,7 +900,7 @@ def lstm_unit(x_t,
 
             i_t = \sigma(L_{i_t})
 
-    This layer has two outputs including :math:`o_t` and :math:`h_t`.
+    This layer has two outputs including :math:`h_t` and :math:`o_t`.
 
     Args:
         x_t (Variable): The input value of current step.
@@ -915,7 +915,7 @@ def lstm_unit(x_t,
         startup_program (Program): the startup program.
 
     Returns:
-        tuple: The cell value and hidden value of lstm unit.
+        tuple: The hidden value and cell value of lstm unit.
 
     Raises:
         ValueError: The ranks of **x_t**, **hidden_t_prev** and **cell_t_prev**\
@@ -929,7 +929,7 @@ def lstm_unit(x_t,
              x_t = fluid.layers.fc(input=x_t_data, size=10)
              prev_hidden = fluid.layers.fc(input=prev_hidden_data, size=20)
              prev_cell = fluid.layers.fc(input=prev_cell_data, size=30)
-             cell_value, hidden_value = fluid.layers.lstm_unit(x_t=x_t,
+             hidden_value, cell_value = fluid.layers.lstm_unit(x_t=x_t,
                                                     hidden_t_prev=prev_hidden,
                                                     cell_t_prev=prev_cell)
     """
@@ -977,4 +977,4 @@ def lstm_unit(x_t,
                  "H": h},
         attrs={"forget_bias": forget_bias})
 
-    return c, h
+    return h, c

python/paddle/v2/fluid/tests/test_layers.py

@@ -161,7 +161,7 @@ class TestBook(unittest.TestCase):
                     x=dat, label=lbl))
         print(str(program))
 
-    def test_seq_expand(self):
+    def test_sequence_expand(self):
         program = Program()
         with program_guard(program):
             x = layers.data(name='x', shape=[10], dtype='float32')