update split_lod_tensor doc

e2783bb6 · qiaolongfei · 9de779f1 · e2783bb6
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python/paddle/fluid/layers/control_flow.py python/paddle/fluid/layers/control_flow.py +4 -2

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--- a/python/paddle/fluid/layers/control_flow.py
+++ b/python/paddle/fluid/layers/control_flow.py
@@ -69,8 +69,10 @@ def split_lod_tensor(input, mask, level=0):
        level(int): The specific lod level to split.

    Returns:
-        Variable: The true branch of tensor as per the mask applied to input.
-        Variable: The false branch of tensor as per the mask applied to input.
+        tuple(Variable, Variable):
+        The true branch of tensor as per the mask applied to input.
+
+        The false branch of tensor as per the mask applied to input.

    Examples:
        .. code-block:: python