29     def __init__(self, serial):  argument
30         self.serial = serial
32             'No device with serial {}'.format(serial))
66         serial, _ = re.split(r'\s+', line, maxsplit=1)
67         devices.append(serial)
78 def _get_device_by_serial(serial, product=None, adb_path='adb'):  argument
80         if device == serial:
81             return AndroidDevice(serial, product, adb_path)
82     raise DeviceNotFoundError(serial)
85 def get_device(serial=None, product=None, adb_path='adb'):  argument
106     if serial is not None:
107         return _get_device_by_serial(serial, product, adb_path)
121         serial = subprocess.check_output(
125     if serial == 'unknown':
127     return _get_device_by_serial(serial, adb_path=adb_path)
262     def __init__(self, serial, product=None, adb_path='adb'):  argument
263         self.serial = serial
268         if self.serial is not None:
269             self.adb_cmd.extend(['-s', serial])