Merge pull request #14549 from wzzju/add-code-exp

add some activation api examples.

python/paddle/fluid/layers/nn.py

@@ -6837,6 +6837,13 @@ def elu(x, alpha=1.0, name=None):
 
     Returns:
         output(${out_type}): ${out_comment}
+
+    Examples:
+
+        .. code-block:: python
+
+            x = fluid.layers.data(name="x", shape=[3,10,32,32], dtype="float32")
+            y = fluid.layers.elu(x, alpha=0.2)
     """
     helper = LayerHelper('elu', **locals())
     out = helper.create_variable_for_type_inference(dtype=x.dtype)
@@ -6860,6 +6867,13 @@ def relu6(x, threshold=6.0, name=None):
 
     Returns:
         output(${out_type}): ${out_comment}
+
+    Examples:
+
+        .. code-block:: python
+
+            x = fluid.layers.data(name="x", shape=[3,10,32,32], dtype="float32")
+            y = fluid.layers.relu6(x, threshold=6.0)
     """
     helper = LayerHelper('relu6', **locals())
     out = helper.create_variable_for_type_inference(dtype=x.dtype)
@@ -6883,6 +6897,13 @@ def pow(x, factor=1.0, name=None):
 
     Returns:
         output(${out_type}): ${out_comment}
+
+    Examples:
+
+        .. code-block:: python
+
+            x = fluid.layers.data(name="x", shape=[3,10,32,32], dtype="float32")
+            y = fluid.layers.pow(x, factor=2.0)
     """
     helper = LayerHelper('pow', **locals())
     out = helper.create_variable_for_type_inference(dtype=x.dtype)
@@ -6907,6 +6928,13 @@ def stanh(x, scale_a=2.0 / 3.0, scale_b=1.7159, name=None):
 
     Returns:
         output(${out_type}): ${out_comment}
+
+    Examples:
+
+        .. code-block:: python
+
+            x = fluid.layers.data(name="x", shape=[3,10,32,32], dtype="float32")
+            y = fluid.layers.stanh(x, scale_a=0.67, scale_b=1.72)
     """
     helper = LayerHelper('stanh', **locals())
     out = helper.create_variable_for_type_inference(dtype=x.dtype)
@@ -6932,6 +6960,13 @@ def hard_sigmoid(x, slope=0.2, offset=0.5, name=None):
 
     Returns:
         output(${out_type}): ${out_comment}
+
+    Examples:
+
+        .. code-block:: python
+
+            x = fluid.layers.data(name="x", shape=[3,10,32,32], dtype="float32")
+            y = fluid.layers.hard_sigmoid(x, slope=0.3, offset=0.8)
     """
     helper = LayerHelper('hard_sigmoid', **locals())
     out = helper.create_variable_for_type_inference(dtype=x.dtype)
@@ -6956,6 +6991,13 @@ def swish(x, beta=1.0, name=None):
 
     Returns:
         output(${out_type}): ${out_comment}
+
+    Examples:
+
+        .. code-block:: python
+
+            x = fluid.layers.data(name="x", shape=[3,10,32,32], dtype="float32")
+            y = fluid.layers.swish(x, beta=2.0)
     """
     helper = LayerHelper('swish', **locals())
     out = helper.create_variable_for_type_inference(dtype=x.dtype)