Upgrade yapf to 0.20.0

Upgrade yapf version to 0.20.0 and reformat Python files.

5 files changed, 19 insertions, 18 deletions

diff --git a/tools/buildgen/bunch.py b/tools/buildgen/bunch.py
index 0ce9a6b233..f3bfc81102 100755
--- a/tools/buildgen/bunch.py
+++ b/tools/buildgen/bunch.py
@@ -48,5 +48,6 @@ def merge_json(dst, add):
     elif isinstance(dst, list) and isinstance(add, list):
         dst.extend(add)
     else:
-        raise Exception('Tried to merge incompatible objects %s %s\n\n%r\n\n%r'
-                        % (type(dst).__name__, type(add).__name__, dst, add))
+        raise Exception(
+            'Tried to merge incompatible objects %s %s\n\n%r\n\n%r' %
+            (type(dst).__name__, type(add).__name__, dst, add))
diff --git a/tools/buildgen/mako_renderer.py b/tools/buildgen/mako_renderer.py
index 0569fa14d2..acd72bd2e3 100755
--- a/tools/buildgen/mako_renderer.py
+++ b/tools/buildgen/mako_renderer.py
@@ -99,10 +99,10 @@ def main(argv):
         elif opt == '-P':
             assert not got_preprocessed_input
             assert json_dict == {}
-            sys.path.insert(
-                0,
-                os.path.abspath(
-                    os.path.join(os.path.dirname(sys.argv[0]), 'plugins')))
+            sys.path.insert(0,
+                            os.path.abspath(
+                                os.path.join(
+                                    os.path.dirname(sys.argv[0]), 'plugins')))
             with open(arg, 'r') as dict_file:
                 dictionary = pickle.load(dict_file)
             got_preprocessed_input = True
diff --git a/tools/buildgen/plugins/expand_filegroups.py b/tools/buildgen/plugins/expand_filegroups.py
index 886a59cdbb..99d9463b3f 100755
--- a/tools/buildgen/plugins/expand_filegroups.py
+++ b/tools/buildgen/plugins/expand_filegroups.py
@@ -104,8 +104,7 @@ def mako_plugin(dictionary):
 
     # build reverse dependency map
     things = {}
-    for thing in dictionary['libs'] + dictionary['targets'] + dictionary[
-            'filegroups']:
+    for thing in dictionary['libs'] + dictionary['targets'] + dictionary['filegroups']:
         things[thing['name']] = thing
         thing['used_by'] = []
     thing_deps = lambda t: t.get('uses', []) + t.get('filegroups', []) + t.get('deps', [])
@@ -148,7 +147,7 @@ def mako_plugin(dictionary):
                 lib[lst] = vals
             lib['plugins'] = plugins
         if lib.get('generate_plugin_registry', False):
-            lib['src'].append('src/core/plugin_registry/%s_plugin_registry.cc' %
-                              lib['name'])
+            lib['src'].append(
+                'src/core/plugin_registry/%s_plugin_registry.cc' % lib['name'])
         for lst in FILEGROUP_LISTS:
             lib[lst] = uniquify(lib.get(lst, []))
diff --git a/tools/buildgen/plugins/generate_vsprojects.py b/tools/buildgen/plugins/generate_vsprojects.py
index f6251d4677..f7ef49288f 100755
--- a/tools/buildgen/plugins/generate_vsprojects.py
+++ b/tools/buildgen/plugins/generate_vsprojects.py
@@ -56,11 +56,12 @@ def mako_plugin(dictionary):
             target['vs_props'] = []
         target['vs_proj_dir'] = target.get('vs_proj_dir', default_test_dir)
         if target.get('vs_project_guid',
-                      None) is None and 'windows' in target.get('platforms',
-                                                                ['windows']):
+                      None) is None and 'windows' in target.get(
+                          'platforms', ['windows']):
             name = target['name']
             guid = re.sub('(........)(....)(....)(....)(.*)',
-                          r'{\1-\2-\3-\4-\5}', hashlib.md5(name).hexdigest())
+                          r'{\1-\2-\3-\4-\5}',
+                          hashlib.md5(name).hexdigest())
             target['vs_project_guid'] = guid.upper()
     # Exclude projects without a visual project guid, such as the tests.
     projects = [
@@ -69,9 +70,9 @@ def mako_plugin(dictionary):
 
     projects = [
         project for project in projects
-        if project['language'] != 'c++' or project['build'] == 'all' or project[
-            'build'] == 'protoc' or (project['language'] == 'c++' and (project[
-                'build'] == 'test' or project['build'] == 'private'))
+        if project['language'] != 'c++' or project['build'] == 'all' or
+        project['build'] == 'protoc' or (project['language'] == 'c++' and (
+            project['build'] == 'test' or project['build'] == 'private'))
     ]
 
     project_dict = dict([(p['name'], p) for p in projects])
diff --git a/tools/buildgen/plugins/transitive_dependencies.py b/tools/buildgen/plugins/transitive_dependencies.py
index 5373bca2d1..258e10bff5 100644
--- a/tools/buildgen/plugins/transitive_dependencies.py
+++ b/tools/buildgen/plugins/transitive_dependencies.py
@@ -54,5 +54,5 @@ def mako_plugin(dictionary):
                 target['transitive_deps'] = transitive_deps(target, libs)
 
     python_dependencies = dictionary.get('python_dependencies')
-    python_dependencies['transitive_deps'] = (
-        transitive_deps(python_dependencies, libs))
+    python_dependencies['transitive_deps'] = (transitive_deps(
+        python_dependencies, libs))