Format python files using yapf

Change-Id: I8b7b97efb6bfdcceef9efc533cdaa0675ab7db40
diff --git a/tools/adb.py b/tools/adb.py
index 2e015a0..988c684 100644
--- a/tools/adb.py
+++ b/tools/adb.py
@@ -7,105 +7,117 @@
 import time
 import utils
 
+
 def install_apk_on_emulator(apk, emulator_id, quiet=False):
-  cmd = ['adb', '-s', emulator_id, 'install', '-r', '-d', apk]
-  if quiet:
-    subprocess.check_output(cmd)
-  else:
-    subprocess.check_call(cmd)
+    cmd = ['adb', '-s', emulator_id, 'install', '-r', '-d', apk]
+    if quiet:
+        subprocess.check_output(cmd)
+    else:
+        subprocess.check_call(cmd)
 
 
 def uninstall_apk_on_emulator(app_id, emulator_id):
-  process = subprocess.Popen(
-    ['adb', '-s', emulator_id, 'uninstall', app_id],
-    stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-  stdout, stderr = process.communicate()
-  stdout = stdout.decode('UTF-8')
-  stderr = stderr.decode('UTF-8')
+    process = subprocess.Popen(['adb', '-s', emulator_id, 'uninstall', app_id],
+                               stdout=subprocess.PIPE,
+                               stderr=subprocess.PIPE)
+    stdout, stderr = process.communicate()
+    stdout = stdout.decode('UTF-8')
+    stderr = stderr.decode('UTF-8')
 
-  if stdout.strip() == 'Success':
-    # Successfully uninstalled
-    return
+    if stdout.strip() == 'Success':
+        # Successfully uninstalled
+        return
 
-  if 'Unknown package: {}'.format(app_id) in stderr:
-    # Application not installed
-    return
+    if 'Unknown package: {}'.format(app_id) in stderr:
+        # Application not installed
+        return
 
-  # Check if the app is listed in packages
-  packages = subprocess.check_output(['adb', 'shell', 'pm', 'list', 'packages'])
-  if not 'package:' + app_id in packages:
-    return
+    # Check if the app is listed in packages
+    packages = subprocess.check_output(
+        ['adb', 'shell', 'pm', 'list', 'packages'])
+    if not 'package:' + app_id in packages:
+        return
 
-  raise Exception(
-    'Unexpected result from `adb uninstall {}\nStdout: {}\nStderr: {}'.format(
-      app_id, stdout, stderr))
+    raise Exception(
+        'Unexpected result from `adb uninstall {}\nStdout: {}\nStderr: {}'.
+        format(app_id, stdout, stderr))
 
 
 def wait_for_emulator(emulator_id):
-  stdout = subprocess.check_output(['adb', 'devices']).decode('UTF-8')
-  if '{}\tdevice'.format(emulator_id) in stdout:
-    return True
-
-  print('Emulator \'{}\' not connected; waiting for connection'.format(
-    emulator_id))
-
-  time_waited = 0
-  while True:
-    time.sleep(10)
-    time_waited += 10
     stdout = subprocess.check_output(['adb', 'devices']).decode('UTF-8')
-    if '{}\tdevice'.format(emulator_id) not in stdout:
-      print('... still waiting for connection')
-      if time_waited >= 5 * 60:
-        return False
-    else:
-      return True
+    if '{}\tdevice'.format(emulator_id) in stdout:
+        return True
+
+    print('Emulator \'{}\' not connected; waiting for connection'.format(
+        emulator_id))
+
+    time_waited = 0
+    while True:
+        time.sleep(10)
+        time_waited += 10
+        stdout = subprocess.check_output(['adb', 'devices']).decode('UTF-8')
+        if '{}\tdevice'.format(emulator_id) not in stdout:
+            print('... still waiting for connection')
+            if time_waited >= 5 * 60:
+                return False
+        else:
+            return True
 
 
 def run_monkey(app_id, emulator_id, apk, monkey_events, quiet, enable_logging):
-  if not wait_for_emulator(emulator_id):
-    return False
+    if not wait_for_emulator(emulator_id):
+        return False
 
-  install_apk_on_emulator(apk, emulator_id, quiet)
+    install_apk_on_emulator(apk, emulator_id, quiet)
 
-  # Intentionally using a constant seed such that the monkey generates the same
-  # event sequence for each shrinker.
-  random_seed = 42
+    # Intentionally using a constant seed such that the monkey generates the same
+    # event sequence for each shrinker.
+    random_seed = 42
 
-  cmd = ['adb', '-s', emulator_id, 'shell', 'monkey', '-p', app_id,
-         '-s', str(random_seed), str(monkey_events)]
+    cmd = [
+        'adb', '-s', emulator_id, 'shell', 'monkey', '-p', app_id, '-s',
+        str(random_seed),
+        str(monkey_events)
+    ]
 
-  try:
-    stdout = utils.RunCmd(cmd, quiet=quiet, logging=enable_logging)
-    succeeded = ('Events injected: {}'.format(monkey_events) in stdout)
-  except subprocess.CalledProcessError as e:
-    succeeded = False
+    try:
+        stdout = utils.RunCmd(cmd, quiet=quiet, logging=enable_logging)
+        succeeded = ('Events injected: {}'.format(monkey_events) in stdout)
+    except subprocess.CalledProcessError as e:
+        succeeded = False
 
-  uninstall_apk_on_emulator(app_id, emulator_id)
+    uninstall_apk_on_emulator(app_id, emulator_id)
 
-  return succeeded
+    return succeeded
 
 
-def run_instrumented(app_id, test_id, emulator_id, apk, test_apk, quiet,
+def run_instrumented(app_id,
+                     test_id,
+                     emulator_id,
+                     apk,
+                     test_apk,
+                     quiet,
                      enable_logging,
                      test_runner='androidx.test.runner.AndroidJUnitRunner'):
-  if not wait_for_emulator(emulator_id):
-    return None
+    if not wait_for_emulator(emulator_id):
+        return None
 
-  install_apk_on_emulator(apk, emulator_id, quiet)
-  install_apk_on_emulator(test_apk, emulator_id, quiet)
+    install_apk_on_emulator(apk, emulator_id, quiet)
+    install_apk_on_emulator(test_apk, emulator_id, quiet)
 
-  cmd = ['adb', '-s', emulator_id, 'shell', 'am', 'instrument', '-w',
-         '{}/{}'.format(test_id, test_runner)]
+    cmd = [
+        'adb', '-s', emulator_id, 'shell', 'am', 'instrument', '-w',
+        '{}/{}'.format(test_id, test_runner)
+    ]
 
-  try:
-    stdout = utils.RunCmd(cmd, quiet=quiet, logging=enable_logging)
-    # The runner will print OK (X tests) if completed succesfully
-    succeeded = any("OK (" in s for s in stdout)
-  except subprocess.CalledProcessError as e:
-    succeeded = False
+    try:
+        stdout = utils.RunCmd(cmd, quiet=quiet, logging=enable_logging)
+        # The runner will print OK (X tests) if completed succesfully
+        succeeded = any("OK (" in s for s in stdout)
+    except subprocess.CalledProcessError as e:
+        succeeded = False
 
-  uninstall_apk_on_emulator(test_id, emulator_id)
-  uninstall_apk_on_emulator(app_id, emulator_id)
+    uninstall_apk_on_emulator(test_id, emulator_id)
+    uninstall_apk_on_emulator(app_id, emulator_id)
 
-  return succeeded
+    return succeeded