Demo code does not work

[direvius]

Seems like adb connection is closed after each Shell comand:

95:automation direvius$ python ./cmd.py
0

Traceback (most recent call last):
  File "./cmd.py", line 16, in <module>
    print device.Shell('echo %d' % i)
  File "/usr/local/lib/python2.7/site-packages/adb/adb_commands.py", line 227, in Shell
    timeout_ms=timeout_ms)
  File "/usr/local/lib/python2.7/site-packages/adb/adb_protocol.py", line 369, in Command
    return ''.join(cls.StreamingCommand(usb, service, command, timeout_ms))
  File "/usr/local/lib/python2.7/site-packages/adb/adb_protocol.py", line 394, in StreamingCommand
    for data in connection.ReadUntilClose():
AttributeError: 'NoneType' object has no attribute 'ReadUntilClose'

It works when there are ConnectDevice calls before every Shell

[fahhem]

Which example code is this, and what version of Python? Please retry from head (or the latest PyPI release 1.2.0)

[Manabu-GT]

@fahhem

I'm running the example code on README and got the same error.
I installed the latest release 1.2.0 through "pip install adb".
The python version is "Python 2.7.13". It is LG's G6 running Android 7.0 which I'm currently testing with.

Traceback (most recent call last):
  File "test.py", line 25, in <module>
    print device.Shell('echo %d' % i)
  File "/usr/local/lib/python2.7/site-packages/adb/adb_commands.py", line 227, in Shell
    timeout_ms=timeout_ms)
  File "/usr/local/lib/python2.7/site-packages/adb/adb_protocol.py", line 376, in Command
    return ''.join(cls.StreamingCommand(usb, service, command, timeout_ms))
  File "/usr/local/lib/python2.7/site-packages/adb/adb_protocol.py", line 404, in StreamingCommand
    for data in connection.ReadUntilClose():
AttributeError: 'NoneType' object has no attribute 'ReadUntilClose'