ucloud · yufeiminds · Aug 21, 2019 · Aug 21, 2019
diff --git a/README.md b/README.md
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 <p align="center">
     <img src="https://ucloud-sdk.dl.ufileos.com/logos%2Flogo-mini.png" />
 </p>

diff --git a/docs/core.rst b/docs/core.rst
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 Core
 ====
 

diff --git a/docs/helpers.rst b/docs/helpers.rst
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 Helpers
 =======
 

diff --git a/docs/index.rst b/docs/index.rst
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 UCloud SDK Python 2
 ===================
 

diff --git a/docs/quick_start.rst b/docs/quick_start.rst
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 QuickStart
 ==========
 

diff --git a/docs/services.rst b/docs/services.rst
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 UCloud SDK Services
 ===================
 

diff --git a/docs/usage.rst b/docs/usage.rst
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 Usage
 =====
 

diff --git a/examples/two-tier/README.md b/examples/two-tier/README.md
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 # UCloud SDK Two-Tier Example
 
 ## What is the goal

diff --git a/examples/uhost/README.md b/examples/uhost/README.md
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 # UCloud SDK UHost Example
 
 ## What is the goal

diff --git a/scripts/migrate/_migrate.py b/scripts/migrate/_migrate.py
@@ -25,8 +25,6 @@ class Config:
 
 
 class Migrate(object):
-    UTF8_HEADER = '# -*- coding: utf-8 -*-\n\n'
-
     default_plugins_classes = {
         "py3to2": SDK3to2Transformer,
         "doc": DocTransformer,
@@ -79,7 +77,7 @@ def run(self, source_path: str, output_path: str):
             # convert destination code
             output_code = source_code
             for plugin in plugins:
-                output_code = self.UTF8_HEADER + plugin.convert(source_code)
+                output_code = plugin.convert(source_code)
 
             # output to file
             os.makedirs(os.path.dirname(result_path), exist_ok=True)

diff --git a/scripts/migrate/_plugin_py3to2.py b/scripts/migrate/_plugin_py3to2.py
@@ -4,6 +4,8 @@
 
 
 class SDK3to2Transformer(ast.NodeTransformer):
+    UTF8_HEADER = '# -*- coding: utf-8 -*-\n\n'
+
     def visit_Import(self, node):
         is_typing = [alias for alias in node.names if alias.name == 'typing']
         return None if is_typing else node
@@ -56,4 +58,4 @@ def visit_ClassDef(self, node):
     def convert(self, source: str) -> str:
         ast_node = ast.parse(source)
         ast_node = self.visit(ast_node)
-        return astor.to_source(ast_node)
+        return self.UTF8_HEADER + astor.to_source(ast_node)
diff --git a/tests/test_testing/test_utest.py b/tests/test_testing/test_utest.py
@@ -5,7 +5,7 @@
 
 
 @pytest.mark.skipif(env.is_ut(), reason=env.get_skip_reason())
-def test_acc_pre_check(client):
+def test_acc_pre_check(self, client):
     assert str(client)
     assert client.config.to_dict()
     assert client.credential.to_dict()

diff --git a/ucloud/core/utils/compat.py b/ucloud/core/utils/compat.py
@@ -10,6 +10,6 @@
 else:
     import types
 
-    str = unicode
+    str = unicode  # noqa: F821
     string_types = types.StringTypes
     from collections import Callable
-Original file line number
+Diff line change
@@ -1,5 +1,3 @@
-    # -*- coding: utf-8 -*-
     Core
     ====
@@ Expand Down @@