fix style issue

doc/v2/dev/contribute_to_paddle_en.md

-../../../CONTRIBUTING.md
+../../../CONTRIBUTING.md
\ No newline at end of file

paddle/fluid/framework/data_type_transform.cu

+// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 data_type_transform.cc
\ No newline at end of file

paddle/fluid/framework/tensor_util.cu

+// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 tensor_util.cc
\ No newline at end of file

paddle/fluid/platform/nccl_helper.h

@@ -150,4 +150,4 @@ struct NCCLContextMap {
 
 }  // namespace platform
 }  // namespace paddle
-#endif
+#endif
\ No newline at end of file

paddle/fluid/platform/variant.h

@@ -49,4 +49,4 @@ limitations under the License. */
 #define __builtin_expect(EXP, C)  (EXP)
 #else
 #define UNUSED __attribute__((unused))
-#endif
+#endif
\ No newline at end of file

python/paddle/fluid/__init__.py

@@ -112,11 +112,10 @@ def __bootstrap__():
     os.environ['OMP_NUM_THREADS'] = str(num_threads)
 
     read_env_flags = [
-        'use_pinned_memory', 'check_nan_inf', 'benchmark',
-        'eager_delete_scope', 'use_mkldnn', 'initial_cpu_memory_in_mb',
-        'init_allocated_mem', 'free_idle_memory', 'paddle_num_threads',
-        'dist_threadpool_size', 'eager_delete_tensor_gb',
-        'reader_queue_speed_test_mode'
+        'use_pinned_memory', 'check_nan_inf', 'benchmark', 'eager_delete_scope',
+        'use_mkldnn', 'initial_cpu_memory_in_mb', 'init_allocated_mem',
+        'free_idle_memory', 'paddle_num_threads', 'dist_threadpool_size',
+        'eager_delete_tensor_gb', 'reader_queue_speed_test_mode'
     ]
     if os.name != 'nt':
         read_env_flags.append('warpctc_dir')

python/paddle/fluid/layers/io.py

@@ -348,6 +348,7 @@ def _copy_reader_create_op_(block, op):
 
 
 if os.name != 'nt':
+
     @templatedoc(op_type='create_recordio_file_reader')
     def open_recordio_file(filename,
                            shapes,
@@ -405,8 +406,8 @@ if os.name != 'nt':
 
         startup_var.desc.set_dtypes(dtypes)
         startup_var.persistable = True
-        main_prog_var = _copy_reader_var_(default_main_program().current_block(),
-                                          startup_var)
+        main_prog_var = _copy_reader_var_(
+            default_main_program().current_block(), startup_var)
 
         if pass_num > 1:
             main_prog_var = multi_pass(reader=main_prog_var, pass_num=pass_num)

python/paddle/fluid/layers/nn.py

@@ -342,6 +342,7 @@ def embedding(input,
 
 
 if os.name != 'nt':
+
     @templatedoc(op_type="lstm")
     def dynamic_lstm(input,
                      size,
@@ -961,6 +962,7 @@ def linear_chain_crf(input, label, param_attr=None):
 
 
 if os.name != 'nt':
+
     @templatedoc()
     def crf_decoding(input, param_attr, label=None):
         """
@@ -988,9 +990,11 @@ if os.name != 'nt':
             dtype=helper.input_dtype())
         helper.append_op(
             type='crf_decoding',
-            inputs={"Emission": [input],
-                    "Transition": transition,
-                    "Label": label},
+            inputs={
+                "Emission": [input],
+                "Transition": transition,
+                "Label": label
+            },
             outputs={"ViterbiPath": [viterbi_path]})
 
         return viterbi_path
@@ -5530,8 +5534,13 @@ def label_smooth(label,
 
 
 if os.name != 'nt':
+
     @templatedoc()
-    def roi_pool(input, rois, pooled_height=1, pooled_width=1, spatial_scale=1.0):
+    def roi_pool(input,
+                 rois,
+                 pooled_height=1,
+                 pooled_width=1,
+                 spatial_scale=1.0):
         """
         ${comment}
 

python/paddle/fluid/layers/ops.py

@@ -105,7 +105,6 @@ if os.name != 'nt':
 
     _cum_sum_ = generate_layer_fn('cumsum')
 
-
     def cumsum(x, axis=None, exclusive=None, reverse=None):
         locals_var = locals().keys()
         kwargs = dict()
@@ -115,7 +114,6 @@ if os.name != 'nt':
                 kwargs[name] = val
         return _cum_sum_(**kwargs)
 
-
     cumsum.__doc__ = _cum_sum_.__doc__ + """
     Examples:
     

python/paddle/trainer_config_helpers/networks.py

@@ -1719,7 +1719,7 @@ def inputs(layers, *args):
     if len(args) != 0:
         layers.extend(args)
 
-    Inputs(*[l.name for l in layers])
+    Inputs(* [l.name for l in layers])
 
 
 def outputs(layers, *args):
@@ -1769,7 +1769,7 @@ def outputs(layers, *args):
     assert len(layers) > 0
 
     if HasInputsSet():  # input already set
-        Outputs(*[l.name for l in layers])
+        Outputs(* [l.name for l in layers])
         return  # just return outputs.
 
     if len(layers) != 1: