Python 3 compatibility.

Test: ndk/run_tests.py
Bug: None
Change-Id: Id0d2d8024adec880c1a41b524704df1641cda065

python-packages/adb/device.py

@@ -51,7 +51,8 @@ def get_devices(adb_path='adb'):
     with open(os.devnull, 'wb') as devnull:
         subprocess.check_call([adb_path, 'start-server'], stdout=devnull,
                               stderr=devnull)
-    out = split_lines(subprocess.check_output([adb_path, 'devices']))
+    out = split_lines(
+        subprocess.check_output([adb_path, 'devices']).decode('utf-8'))
 
     # The first line of `adb devices` just says "List of attached devices", so
     # skip that.
@@ -118,7 +119,7 @@ def _get_device_by_type(flag, adb_path):
                               stderr=devnull)
     try:
         serial = subprocess.check_output(
-            [adb_path, flag, 'get-serialno']).strip()
+            [adb_path, flag, 'get-serialno']).decode('utf-8').strip()
     except subprocess.CalledProcessError:
         raise RuntimeError('adb unexpectedly returned nonzero')
     if serial == 'unknown':
@@ -233,6 +234,7 @@ def version(adb_path=None):
 
     adb_path = adb_path if adb_path is not None else ['adb']
     version_output = subprocess.check_output(adb_path + ['version'])
+    version_output = version_output.decode('utf-8')
     pattern = r'^Android Debug Bridge version 1.0.(\d+)$'
     result = re.match(pattern, version_output.splitlines()[0])
     if not result:
@@ -273,8 +275,8 @@ class AndroidDevice(object):
     @property
     def linesep(self):
         if self._linesep is None:
-            self._linesep = subprocess.check_output(self.adb_cmd +
-                                                    ['shell', 'echo'])
+            self._linesep = subprocess.check_output(
+                self.adb_cmd + ['shell', 'echo']).decode('utf-8')
         return self._linesep
 
     @property
@@ -326,7 +328,7 @@ class AndroidDevice(object):
     def _simple_call(self, cmd):
         logging.info(' '.join(self.adb_cmd + cmd))
         return _subprocess_check_output(
-            self.adb_cmd + cmd, stderr=subprocess.STDOUT)
+            self.adb_cmd + cmd, stderr=subprocess.STDOUT).decode('utf-8')
 
     def shell(self, cmd):
         """Calls `adb shell`
@@ -361,6 +363,8 @@ class AndroidDevice(object):
         p = _subprocess_Popen(
             cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         stdout, stderr = p.communicate()
+        stdout = stdout.decode('utf-8')
+        stderr = stderr.decode('utf-8')
         if self.has_shell_protocol():
             exit_code = p.returncode
         else: