[Android] Fix new pylint errors in build/android/.

build/android/buildbot/bb_device_status_check.py

 #!/usr/bin/env python
 #
 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """A class to keep track of devices across builds and report state."""
 import json
 import logging
 import optparse
@@ skipping 39 matching lines @@
   device_build = device_adb.GetProp('ro.build.id')
   device_build_type = device_adb.GetProp('ro.build.type')
   device_product_name = device_adb.GetProp('ro.product.name')
 
   try:
     battery_info = device_adb.old_interface.GetBatteryInfo()
   except Exception as e:
     battery_info = {}
     logging.error('Unable to obtain battery info for %s, %s', serial, e)
 
-  def _GetData(re_expression, line, lambda_function=lambda x:x):
+  def _GetData(re_expression, line, lambda_function=lambda x: x):
     if not line:
       return 'Unknown'
     found = re.findall(re_expression, line)
     if found and len(found):
       return lambda_function(found[0])
     return 'Unknown'
 
   battery_level = int(battery_info.get('level', 100))
-  imei_slice = _GetData('Device ID = (\d+)',
+  imei_slice = _GetData(r'Device ID = (\d+)',
                         device_adb.old_interface.GetSubscriberInfo(),
                         lambda x: x[-6:])
   report = ['Device %s (%s)' % (serial, device_type),
             '  Build: %s (%s)' %
               (device_build, device_adb.GetProp('ro.build.fingerprint')),
             '  Current Battery Service state: ',
             '\n'.join(['    %s: %s' % (k, v)
                        for k, v in battery_info.iteritems()]),
             '  IMEI slice: %s' % imei_slice,
             '  Wifi IP: %s' % device_adb.GetProp('dhcp.wlan0.ipaddress'),
@@ skipping 64 matching lines @@
 
     from_address = 'chrome-bot@chromium.org'
     to_addresses = ['chrome-labs-tech-ticket@google.com',
                     'chrome-android-device-alert@google.com']
     cc_addresses = ['chrome-android-device-alert@google.com']
     subject = 'Devices offline on %s, %s, %s' % (
       os.environ.get('BUILDBOT_SLAVENAME'),
       os.environ.get('BUILDBOT_BUILDERNAME'),
       os.environ.get('BUILDBOT_BUILDNUMBER'))
     msg = ('Please reboot the following devices:\n%s' %
-           '\n'.join(map(str,new_missing_devs)))
+           '\n'.join(map(str, new_missing_devs)))
     SendEmail(from_address, to_addresses, cc_addresses, subject, msg)
 
   all_known_devices = list(set(adb_online_devs) | set(last_devices))
   device_list.WritePersistentDeviceList(last_devices_path, all_known_devices)
   device_list.WritePersistentDeviceList(last_missing_devices_path, missing_devs)
 
   if not all_known_devices:
     # This can happen if for some reason the .last_devices file is not
     # present or if it was empty.
     return ['No online devices. Have any devices been plugged in?']
@@ skipping 44 matching lines @@
 
 def RestartUsb():
   if not os.path.isfile('/usr/bin/restart_usb'):
     print ('ERROR: Could not restart usb. /usr/bin/restart_usb not installed '
            'on host (see BUG=305769).')
     return False
 
   lsusb_proc = bb_utils.SpawnCmd(['lsusb'], stdout=subprocess.PIPE)
   lsusb_output, _ = lsusb_proc.communicate()
   if lsusb_proc.returncode:
-    print ('Error: Could not get list of USB ports (i.e. lsusb).')
+    print 'Error: Could not get list of USB ports (i.e. lsusb).'
     return lsusb_proc.returncode
 
-  usb_devices = [re.findall('Bus (\d\d\d) Device (\d\d\d)', lsusb_line)[0]
+  usb_devices = [re.findall(r'Bus (\d\d\d) Device (\d\d\d)', lsusb_line)[0]
                  for lsusb_line in lsusb_output.strip().split('\n')]
 
   all_restarted = True
   # Walk USB devices from leaves up (i.e reverse sorted) restarting the
   # connection. If a parent node (e.g. usb hub) is restarted before the
   # devices connected to it, the (bus, dev) for the hub can change, making the
   # output we have wrong. This way we restart the devices before the hub.
   for (bus, dev) in reversed(sorted(usb_devices)):
     # Can not restart root usb connections
     if dev != '001':
@@ skipping 146 matching lines @@
 
   if num_failed_devs == len(devices):
     return 2
 
   if not devices:
     return 1
 
 
 if __name__ == '__main__':
   sys.exit(main())