diff --git a/paddle/fluid/operators/scatter_op.cu b/paddle/fluid/operators/scatter_op.cu
index be3ca5f68fbf3..c8dae35822544 100644
--- a/paddle/fluid/operators/scatter_op.cu
+++ b/paddle/fluid/operators/scatter_op.cu
@@ -111,9 +111,10 @@ REGISTER_OP_CUDA_KERNEL(scatter, ops::ScatterOpCUDAKernel<float>,
                         ops::ScatterOpCUDAKernel<double>,
                         ops::ScatterOpCUDAKernel<int>,
                         ops::ScatterOpCUDAKernel<int64_t>,
-			ops::ScatterOpCUDAKernel<paddle::platform::float16>);
-REGISTER_OP_CUDA_KERNEL(scatter_grad, ops::ScatterGradOpCUDAKernel<float>,
-                        ops::ScatterGradOpCUDAKernel<double>,
-                        ops::ScatterOpCUDAKernel<int>,
-                        ops::ScatterOpCUDAKernel<int64_t>,
-			ops::ScatterGradOpCUDAKernel<paddle::platform::float16>);
+                        ops::ScatterOpCUDAKernel<paddle::platform::float16>);
+
+REGISTER_OP_CUDA_KERNEL(
+    scatter_grad, ops::ScatterGradOpCUDAKernel<float>,
+    ops::ScatterGradOpCUDAKernel<double>, ops::ScatterOpCUDAKernel<int>,
+    ops::ScatterOpCUDAKernel<int64_t>,
+    ops::ScatterGradOpCUDAKernel<paddle::platform::float16>);
diff --git a/python/paddle/fluid/tests/unittests/test_scatter_op.py b/python/paddle/fluid/tests/unittests/test_scatter_op.py
index 1f8daacf01a9a..ad542da781670 100644
--- a/python/paddle/fluid/tests/unittests/test_scatter_op.py
+++ b/python/paddle/fluid/tests/unittests/test_scatter_op.py
@@ -276,22 +276,22 @@ def setUp(self):
         self.__class__.op_type = "scatter"
         # compute grad in the following code handly.
         self.__class__.no_need_check_grad = True
-        self.x_type='float16'
+        self.x_type = 'float16'
         self.x_np = np.ones((3, 3)).astype(self.x_type)
         self.index_np = np.array([1, 2]).astype("int32")
         self.updates_np = np.random.random((2, 3)).astype(self.x_type)
         self.output_np = np.copy(self.x_np)
         self.output_np[self.index_np] = self.updates_np
         self.dout_np = np.random.random((3, 3)).astype(self.x_type)
-        
+
         # compute ref_dx
         self.ref_dx = np.copy(self.dout_np)
         zero_np = np.zeros((2, 3)).astype(self.x_type)
         self.ref_dx[self.index_np] = zero_np
 
     def compute_ref_grad_updates(self):
-        ref_grad_updates = paddle.gather(paddle.to_tensor(self.dout_np), 
-                             paddle.to_tensor(self.index_np))
+        ref_grad_updates = paddle.gather(
+            paddle.to_tensor(self.dout_np), paddle.to_tensor(self.index_np))
         return ref_grad_updates
 
     def test_scatter_fp16(self):
@@ -304,8 +304,10 @@ def test_scatter_fp16(self):
             [out_tensor], [paddle.to_tensor(self.dout_np)], retain_graph=True)
         ref_grad_updates = self.compute_ref_grad_updates()
         np.testing.assert_allclose(
-            ref_grad_updates.numpy(), updates_tensor.grad.numpy(), 
-            rtol=1e-5, atol=1e-5)
+            ref_grad_updates.numpy(),
+            updates_tensor.grad.numpy(),
+            rtol=1e-5,
+            atol=1e-5)
         np.testing.assert_allclose(
             self.ref_dx, x_tensor.grad.numpy(), rtol=1e-5, atol=1e-5)
 
diff --git a/python/paddle/tensor/manipulation.py b/python/paddle/tensor/manipulation.py
index 5288b2bd8cf87..75fb262ebdb6d 100644
--- a/python/paddle/tensor/manipulation.py
+++ b/python/paddle/tensor/manipulation.py
@@ -1565,7 +1565,9 @@ def scatter(x, index, updates, overwrite=True, name=None):
     if in_dygraph_mode():
         return _C_ops.scatter(x, index, updates, 'overwrite', overwrite)
 
-    check_variable_and_dtype(x, 'dtype', ['float16', 'float32', 'float64', 'int32', 'int64'], 'scatter')
+    check_variable_and_dtype(
+        x, 'dtype', ['float32', 'float64', 'float16', 'int32', 'int64'],
+        'scatter')
     check_type(overwrite, 'overwrite', bool, 'scatter')
     helper = LayerHelper('scatter', **locals())
     out = helper.create_variable_for_type_inference(x.dtype)