Format python files using yapf

Change-Id: I8b7b97efb6bfdcceef9efc533cdaa0675ab7db40
diff --git a/tools/create_art_tests.py b/tools/create_art_tests.py
index 0c59ae9..99e9085 100755
--- a/tools/create_art_tests.py
+++ b/tools/create_art_tests.py
@@ -15,7 +15,7 @@
 ]
 TOOLS = ["r8", "d8", "r8cf"]
 TEMPLATE = Template(
-"""// Copyright (c) 2016, the R8 project authors. Please see the AUTHORS file
+    """// Copyright (c) 2016, the R8 project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 package com.android.tools.r8.art.$testGeneratingToolchain.$compilerUnderTest;
@@ -61,43 +61,47 @@
 
 
 def get_test_configurations():
-  for toolchain, source_dir in TOOLCHAINS:
-    for tool in TOOLS:
-      if tool == "d8" and toolchain == "none":
-        tool_enum = 'R8_AFTER_D8'
-      else:
-        tool_enum = tool.upper()
-      if tool == "r8cf":
-        if toolchain != "none":
-          continue
-        tool_enum = 'D8_AFTER_R8CF'
-      output_dir = os.path.join(OUTPUT_DIR, toolchain, tool)
-      yield (tool_enum, tool, toolchain, source_dir, output_dir)
+    for toolchain, source_dir in TOOLCHAINS:
+        for tool in TOOLS:
+            if tool == "d8" and toolchain == "none":
+                tool_enum = 'R8_AFTER_D8'
+            else:
+                tool_enum = tool.upper()
+            if tool == "r8cf":
+                if toolchain != "none":
+                    continue
+                tool_enum = 'D8_AFTER_R8CF'
+            output_dir = os.path.join(OUTPUT_DIR, toolchain, tool)
+            yield (tool_enum, tool, toolchain, source_dir, output_dir)
 
 
 def create_tests():
-  for tool_enum, tool, toolchain, source_dir, output_dir in get_test_configurations():
-    test_cases = [d for d in os.listdir(source_dir)
-                  if os.path.isdir(os.path.join(source_dir, d))]
-    if os.path.exists(output_dir):
-      shutil.rmtree(output_dir)
-    os.makedirs(output_dir)
-    for test_case in test_cases:
-      class_name = "Art" + test_case.replace("-", "_") + "Test"
-      contents = TEMPLATE.substitute(
-          name=test_case,
-          compilerUnderTestEnum=tool_enum,
-          compilerUnderTest=tool,
-          testGeneratingToolchain=toolchain,
-          testGeneratingToolchainEnum=toolchain.upper(),
-          testClassName=class_name)
-      with open(os.path.join(output_dir, class_name + ".java"), "w") as fp:
-        fp.write(contents)
+    for tool_enum, tool, toolchain, source_dir, output_dir in get_test_configurations(
+    ):
+        test_cases = [
+            d for d in os.listdir(source_dir)
+            if os.path.isdir(os.path.join(source_dir, d))
+        ]
+        if os.path.exists(output_dir):
+            shutil.rmtree(output_dir)
+        os.makedirs(output_dir)
+        for test_case in test_cases:
+            class_name = "Art" + test_case.replace("-", "_") + "Test"
+            contents = TEMPLATE.substitute(
+                name=test_case,
+                compilerUnderTestEnum=tool_enum,
+                compilerUnderTest=tool,
+                testGeneratingToolchain=toolchain,
+                testGeneratingToolchainEnum=toolchain.upper(),
+                testClassName=class_name)
+            with open(os.path.join(output_dir, class_name + ".java"),
+                      "w") as fp:
+                fp.write(contents)
 
 
 def main():
-  create_tests()
+    create_tests()
 
 
 if __name__ == "__main__":
-  main()
+    main()