integrate autopep8 to presubmit

kokoro/presubmit/build.sh

@@ -45,12 +45,16 @@ sudo apt-get install -y clang-format-6.0
 # Get recent Android build tools.
 echo y | $ANDROID_HOME/tools/bin/sdkmanager --install 'build-tools;30.0.3'
 
+# Python Format tool
+python3 -m pip install autopep8==1.6.0 --user
+
 # Setup environment.
 export ANDROID_NDK_HOME=/opt/android-ndk-r16b
 export BAZEL=$BUILD_ROOT/bazel/bin/bazel
 export BUILDIFIER=$BUILD_ROOT/tools/bin/buildifier
 export BUILDOZER=$BUILD_ROOT/tools/bin/buildozer
 export CLANG_FORMAT=clang-format-6.0
+export AUTOPEP8=autopep8
 
 cd $SRC
 

kokoro/presubmit/presubmit.sh

@@ -18,6 +18,7 @@ BAZEL=${BAZEL:-bazel}
 BUILDIFIER=${BUILDIFIER:-buildifier}
 BUILDOZER=${BUILDOZER:-buildozer}
 CLANG_FORMAT=${CLANG_FORMAT:-clang-format}
+AUTOPEP8=${AUTOPEP8:-autopep8}
 
 if test -t 1; then
   ncolors=$(tput colors)
@@ -102,6 +103,10 @@ function run_gofmt() {
   find . -name "*.go" | xargs $GOFMT -w
 }
 
+function run_autopep8() {
+  $AUTOPEP8 --global-config=tools/build/python/pep8 -r --in-place vulkan_generator
+}
+
 # Ensure we are clean to start out with.
 check "git workspace must be clean" true
 
@@ -127,5 +132,8 @@ check "gazelle" run_gazelle
 # installed its Go SDK (as a dependency to run Gazelle).
 check gofmt run_gofmt
 
+# Check python Formatter(autopep8)
+check autopep8 run_autopep8
+
 echo
 echo "${green}All check completed successfully.$normal"

vulkan_generator/vulkan_parser/spirv_capabilities_parser.py

@@ -52,9 +52,5 @@ def parse(spirv_element: ET.Element) -> types.SpirvCapability:
         else:
             raise SyntaxError(f"Unknown Spirv capability type: {ET.tostring(spirv_element, 'utf-8')}")
 
-    return types.SpirvCapability(
-        name=name,
-        version=version,
-        feature=feature,
-        property=vulkan_property,
-        extension=extension)
+    # Break this lines format intentionally to test presubmit(autopep8)
+    return types.SpirvCapability(name=name, version=version, feature=feature, property=vulkan_property, extension=extension)