# This file is part of cloud-init. See LICENSE file for license information. from __future__ import absolute_import try: from serial import Serial except ImportError: # For older versions of python (ie 2.6) pyserial may not exist and/or # work and/or be installed, so make a dummy/fake serial that blows up # when used... class Serial(object): def __init__(self, *args, **kwargs): pass @staticmethod def isOpen(): return False @staticmethod def write(data): raise IOError("Unable to perform serial `write` operation," " pyserial not installed.") @staticmethod def readline(): raise IOError("Unable to perform serial `readline` operation," " pyserial not installed.") @staticmethod def flush(): raise IOError("Unable to perform serial `flush` operation," " pyserial not installed.") @staticmethod def read(size=1): raise IOError("Unable to perform serial `read` operation," " pyserial not installed.") # vi: ts=4 expandtab