Format python files using yapf

Change-Id: I8b7b97efb6bfdcceef9efc533cdaa0675ab7db40
diff --git a/tools/r8.py b/tools/r8.py
index 0a9e09a..5a2f5e3 100755
--- a/tools/r8.py
+++ b/tools/r8.py
@@ -9,77 +9,73 @@
 import toolhelper
 import utils
 
+
 def ParseOptions(argv):
-  parser = optparse.OptionParser(usage='%prog [options] -- [R8 options]')
-  parser.add_option(
-      '-c',
-      '--commit-hash',
-      '--commit_hash',
-      help='Commit hash of R8 to use.',
-      default=None)
-  parser.add_option(
-      '--debug-agent',
-      help='Enable Java debug agent and suspend compilation (default disabled)',
-      default=False,
-      action='store_true')
-  parser.add_option(
-    '--ea',
-    help='Enable Java assertions when running the compiler (default disabled)',
-    default=False,
-    action='store_true')
-  parser.add_option(
-    '--lib-android',
-    help='Add the android.jar for the given API level',
-    default=None,
-    type=int)
-  parser.add_option(
-    '--lib-rt',
-    help='Add rt.jar from openjdk-1.8',
-    default=False,
-    action='store_true')
-  parser.add_option(
-    '--no-build', '--no_build',
-    help='Do not build R8',
-    default=False,
-    action='store_true')
-  parser.add_option(
-    '--print-runtimeraw', '--print_runtimeraw',
-    metavar='BENCHMARKNAME',
-    help='Print the line \'<BENCHMARKNAME>(RunTimeRaw):' +
-         ' <elapsed> ms\' at the end where <elapsed> is' +
-         ' the elapsed time in milliseconds.')
-  parser.add_option(
-      '--tag',
-      help='Tag of R8 to use.',
-      default=None)
-  parser.add_option(
-      '--version',
-      help='Version of R8 to use.',
-      default=None)
-  return parser.parse_args(argv)
+    parser = optparse.OptionParser(usage='%prog [options] -- [R8 options]')
+    parser.add_option('-c',
+                      '--commit-hash',
+                      '--commit_hash',
+                      help='Commit hash of R8 to use.',
+                      default=None)
+    parser.add_option(
+        '--debug-agent',
+        help=
+        'Enable Java debug agent and suspend compilation (default disabled)',
+        default=False,
+        action='store_true')
+    parser.add_option(
+        '--ea',
+        help=
+        'Enable Java assertions when running the compiler (default disabled)',
+        default=False,
+        action='store_true')
+    parser.add_option('--lib-android',
+                      help='Add the android.jar for the given API level',
+                      default=None,
+                      type=int)
+    parser.add_option('--lib-rt',
+                      help='Add rt.jar from openjdk-1.8',
+                      default=False,
+                      action='store_true')
+    parser.add_option('--no-build',
+                      '--no_build',
+                      help='Do not build R8',
+                      default=False,
+                      action='store_true')
+    parser.add_option('--print-runtimeraw',
+                      '--print_runtimeraw',
+                      metavar='BENCHMARKNAME',
+                      help='Print the line \'<BENCHMARKNAME>(RunTimeRaw):' +
+                      ' <elapsed> ms\' at the end where <elapsed> is' +
+                      ' the elapsed time in milliseconds.')
+    parser.add_option('--tag', help='Tag of R8 to use.', default=None)
+    parser.add_option('--version', help='Version of R8 to use.', default=None)
+    return parser.parse_args(argv)
+
 
 def main(argv):
-  (options, args) = ParseOptions(sys.argv)
-  r8_args = args[1:]
-  if options.lib_android:
-    r8_args.extend(['--lib', utils.get_android_jar(options.lib_android)])
-  if options.lib_rt:
-    r8_args.extend(['--lib', utils.RT_JAR])
-  time_consumer = lambda duration : print_duration(duration, options)
-  return toolhelper.run(
-      'r8',
-      r8_args,
-      build=not options.no_build,
-      debug=options.ea,
-      debug_agent=options.debug_agent,
-      jar=utils.find_r8_jar_from_options(options),
-      main='com.android.tools.r8.R8',
-      time_consumer=time_consumer)
+    (options, args) = ParseOptions(sys.argv)
+    r8_args = args[1:]
+    if options.lib_android:
+        r8_args.extend(['--lib', utils.get_android_jar(options.lib_android)])
+    if options.lib_rt:
+        r8_args.extend(['--lib', utils.RT_JAR])
+    time_consumer = lambda duration: print_duration(duration, options)
+    return toolhelper.run('r8',
+                          r8_args,
+                          build=not options.no_build,
+                          debug=options.ea,
+                          debug_agent=options.debug_agent,
+                          jar=utils.find_r8_jar_from_options(options),
+                          main='com.android.tools.r8.R8',
+                          time_consumer=time_consumer)
+
 
 def print_duration(duration, options):
-  benchmark_name = options.print_runtimeraw
-  if benchmark_name:
-    print('%s-Total(RunTimeRaw): %s ms' % (benchmark_name, duration))
+    benchmark_name = options.print_runtimeraw
+    if benchmark_name:
+        print('%s-Total(RunTimeRaw): %s ms' % (benchmark_name, duration))
+
 
 if __name__ == '__main__':
-  sys.exit(main(sys.argv[1:]))
+    sys.exit(main(sys.argv[1:]))