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# 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
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