Python如何通过subprocess调用adb命令详解

import osimport subprocessclass Adb(object): """ Provides some adb methods """ @staticmethod def adb_devices():  """  Do adb devices  :return The first connected device ID  """  cmd = "adb devices"  c_line = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()[0]  if c_line.find("List of devices attached") < 0: # adb is not working   return None  return c_line.split("/t")[0].split("/r/n")[-1] # This line may have different format @staticmethod def pull_sd_dcim(device, target_dir='E:/files'):  """ Pull DCIM files from device """  print "Pulling files"  des_path = os.path.join(target_dir, device)  if not os.path.exists(des_path):   os.makedirs(des_path)  print des_path  cmd = "adb pull /sdcard/DCIM/ " + des_path  result = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()  print result  print "Finish!"  return des_path @staticmethod def some_adb_cmd():  p = subprocess.Popen('adb shell cd sdcard&&ls&&cd ../sys&&ls',        stdout=subprocess.PIPE, stderr=subprocess.PIPE)  return_code = p.poll()  while return_code is None:   line = p.stdout.readline()   return_code = p.poll()   line = line.strip()   if line:    print line  print "Done"