diff --git a/README.md b/README.md
index badb87f50..990bf98e0 100644
--- a/README.md
+++ b/README.md
@@ -19,4 +19,4 @@ npm run build
 ### Step 3: run
 ```
 python bin/visual_dl.py --port=8888
-```
\ No newline at end of file
+```
diff --git a/bin/visual_dl.py b/bin/visual_dl.py
index 2a286cc7e..7d2121a72 100644
--- a/bin/visual_dl.py
+++ b/bin/visual_dl.py
@@ -52,7 +52,8 @@ def gen_result(status, msg):
 
 @app.route('/static/<path:filename>')
 def serve_static(filename):
-    return send_from_directory(os.path.join(server_path, static_file_path), filename)
+    return send_from_directory(
+        os.path.join(server_path, static_file_path), filename)
 
 
 @app.route("/")
diff --git a/docs/backend_architecture.md b/docs/backend_architecture.md
index 4ef9a6eab..eaa3b0aec 100644
--- a/docs/backend_architecture.md
+++ b/docs/backend_architecture.md
@@ -48,4 +48,3 @@ IM 与 Server 的关系是
 ### Protobuf API
 - 决定了底层的数据格式，protobuf 提供了序列化的公共界面
 - SDK通过Protobuf API操作底层数据
-
diff --git a/docs/data_structure.md b/docs/data_structure.md
index 32a3abe61..56982ad79 100644
--- a/docs/data_structure.md
+++ b/docs/data_structure.md
@@ -159,7 +159,7 @@ histogram 需要得到tensor的分布，因此会把完整的tensor 的数值存
 ]
 ```
 
-## graph 
+## graph
 graph 会复杂一些，可能无法借用上述类型
 
 ```javascript
diff --git a/docs/visualization.md b/docs/visualization.md
index b71513986..1ae692957 100644
--- a/docs/visualization.md
+++ b/docs/visualization.md
@@ -6,4 +6,4 @@
 
 # 前端增量
 
-# 前端采样
\ No newline at end of file
+# 前端采样
diff --git a/setup.py b/setup.py
index fd6b7b934..7865a8735 100644
--- a/setup.py
+++ b/setup.py
@@ -1,12 +1,10 @@
 from setuptools import setup
 
-setup(name="visualdl",
-      version="0.0.1",
-      packages=['visualdl'],
-      include_package_data=True,
-      install_requires=[
-        'flask>=0.12.1'
-      ],
-      url='http://www.baidu.com/',
-      license='Apache 2.0',
-)
+setup(
+    name="visualdl",
+    version="0.0.1",
+    packages=['visualdl'],
+    include_package_data=True,
+    install_requires=['flask>=0.12.1'],
+    url='http://www.baidu.com/',
+    license='Apache 2.0', )
diff --git a/visualdl/__init__.py b/visualdl/__init__.py
index 2a1e845b9..f4d48fbf7 100644
--- a/visualdl/__init__.py
+++ b/visualdl/__init__.py
@@ -1,5 +1,3 @@
 import log
 
-__all__ = [
-    'log'
-]
+__all__ = ['log']
diff --git a/visualdl/backend/logic/im.h b/visualdl/backend/logic/im.h
index dfb73a83c..589597792 100644
--- a/visualdl/backend/logic/im.h
+++ b/visualdl/backend/logic/im.h
@@ -52,6 +52,6 @@ class InformationMaintainer final {
   Storage storage_;
 };
 
-} // namespace visualdl
+}  // namespace visualdl
 
-#endif // VISUALDL_BACKEND_LOGIC_IM_H
+#endif  // VISUALDL_BACKEND_LOGIC_IM_H
diff --git a/visualdl/backend/logic/im_test.cc b/visualdl/backend/logic/im_test.cc
index 8c8896aba..36f5b6e5e 100644
--- a/visualdl/backend/logic/im_test.cc
+++ b/visualdl/backend/logic/im_test.cc
@@ -26,4 +26,4 @@ TEST_F(ImTester, AddRecord) {
   ASSERT_EQ(im.storage().Find("tag0")->records_size(), 20UL);
 }
 
-} // namespace visualdl
+}  // namespace visualdl
diff --git a/visualdl/backend/storage/storage.h b/visualdl/backend/storage/storage.h
index a623eb0f9..385f9983f 100644
--- a/visualdl/backend/storage/storage.h
+++ b/visualdl/backend/storage/storage.h
@@ -1,8 +1,8 @@
 #ifndef VISUALDL_STORAGE_H
 #define VISUALDL_STORAGE_H
 
-#include <string>
 #include <time.h>
+#include <string>
 
 #include "visualdl/backend/storage/storage.pb.h"
 
@@ -66,6 +66,6 @@ class Storage final {
   storage::Storage proto_;
 };
 
-} // namespace visualdl
+}  // namespace visualdl
 
-#endif // VISUALDL_STORAGE_H
+#endif  // VISUALDL_STORAGE_H
diff --git a/visualdl/backend/test.py b/visualdl/backend/test.py
index e7c1add36..193734341 100644
--- a/visualdl/backend/test.py
+++ b/visualdl/backend/test.py
@@ -46,11 +46,7 @@ def test_scalar(self):
         scalar = self.tablet.as_float_scalar()
         py_captions = ["train", "test"]
         step_ids = [10, 20, 30]
-        py_records = [
-            [0.1, 0.2],
-            [0.2, 0.3],
-            [0.3, 0.4]
-        ]
+        py_records = [[0.1, 0.2], [0.2, 0.3], [0.3, 0.4]]
 
         scalar.set_captions(py_captions)
         for i in range(len(py_records)):
diff --git a/visualdl/frontend/src/index.js b/visualdl/frontend/src/index.js
index 74c3dd0a6..3c31ecf63 100644
--- a/visualdl/frontend/src/index.js
+++ b/visualdl/frontend/src/index.js
@@ -6,4 +6,3 @@ new App({
         titleName: 'VisualDL'
     }
 }).attach(document.getElementById('root'));
-