An obvious typing issue in android_commands.py

build/android/pylib/android_commands.py

 # Copyright (c) 2012 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.
 
 """Provides an interface to communicate with the device via the adb command.
 
 Assumes adb binary is currently on system path.
 """
 
 import collections
@@ skipping 464 matching lines @@
     """
     lines = self.RunShellCommand(
         command + '; echo %$?', timeout_time, log_result)
     last_line = lines[-1]
     status_pos = last_line.rfind('%')
     assert status_pos >= 0
     status = int(last_line[status_pos + 1:])
     if status_pos == 0:
       lines = lines[:-1]
     else:
-      lines = lines[:-1] + last_line[:status_pos]
+      lines = lines[:-1] + [last_line[:status_pos]]
     return (status, lines)
 
   def KillAll(self, process):
     """Android version of killall, connected via adb.
 
     Args:
       process: name of the process to kill off
 
     Returns:
       the number of processes killed
@@ skipping 614 matching lines @@
   """
   def __init__(self, output):
     self._output = output
 
   def write(self, data):
     data = data.replace('\r\r\n', '\n')
     self._output.write(data)
 
   def flush(self):
     self._output.flush()