当应用程序启动时，无法自动启动命令

Question

所以我正在尝试使用BACpypes库来学习python和BACnet，现在有点卡住了。

当我启动我的应用程序时，我正在尝试建立一个新的“我的新技术”的问题。

这就是样本。

#!/usr/bin/python """ This application presents a 'console' prompt to the user asking for Who-Is and I-Am commands which create the related APDUs, then lines up the coorresponding I-Am for incoming traffic and prints out the contents. """ import sys from bacpypes.debugging import bacpypes_debugging, ModuleLogger from bacpypes.consolelogging import ConfigArgumentParser from bacpypes.consolecmd import ConsoleCmd from bacpypes.core import run from bacpypes.pdu import Address, GlobalBroadcast from bacpypes.app import LocalDeviceObject, BIPSimpleApplication from bacpypes.apdu import WhoIsRequest, IAmRequest from bacpypes.basetypes import ServicesSupported from bacpypes.errors import DecodingError # some debugging _debug = 0 _log = ModuleLogger(globals()) # globals this_device = None this_application = None this_console = None # # WhoIsIAmApplication # class WhoIsIAmApplication(BIPSimpleApplication): def __init__(self, *args): if _debug: WhoIsIAmApplication._debug("__init__ %r", args) BIPSimpleApplication.__init__(self, *args) # keep track of requests to line up responses self._request = None def request(self, apdu): if _debug: WhoIsIAmApplication._debug("request %r", apdu) # save a copy of the request self._request = apdu # forward it along BIPSimpleApplication.request(self, apdu) def confirmation(self, apdu): if _debug: WhoIsIAmApplication._debug("confirmation %r", apdu) # forward it along BIPSimpleApplication.confirmation(self, apdu) def indication(self, apdu): if _debug: WhoIsIAmApplication._debug("indication %r", apdu) if (isinstance(self._request, WhoIsRequest)) and (isinstance(apdu, IAmRequest)): device_type, device_instance = apdu.iAmDeviceIdentifier if device_type != 'device': raise DecodingError, "invalid object type" if (self._request.deviceInstanceRangeLowLimit is not None) and \ (device_instance < self._request.deviceInstanceRangeLowLimit): pass elif (self._request.deviceInstanceRangeHighLimit is not None) and \ (device_instance > self._request.deviceInstanceRangeHighLimit): pass else: # print out the contents sys.stdout.write('pduSource = ' + repr(apdu.pduSource) + '\n') sys.stdout.write('iAmDeviceIdentifier = ' + str(apdu.iAmDeviceIdentifier) + '\n') sys.stdout.write('maxAPDULengthAccepted = ' + str(apdu.maxAPDULengthAccepted) + '\n') sys.stdout.write('segmentationSupported = ' + str(apdu.segmentationSupported) + '\n') sys.stdout.write('vendorID = ' + str(apdu.vendorID) + '\n') sys.stdout.flush() # forward it along BIPSimpleApplication.indication(self, apdu) bacpypes_debugging(WhoIsIAmApplication) # # WhoIsIAmConsoleCmd # class WhoIsIAmConsoleCmd(ConsoleCmd): def do_whois(self, args): """whois [ <addr>] [ <lolimit> <hilimit> ]""" args = args.split() if _debug: WhoIsIAmConsoleCmd._debug("do_whois %r", args) try: # build a request request = WhoIsRequest() if (len(args) == 1) or (len(args) == 3): request.pduDestination = Address(args[0]) del args[0] else: request.pduDestination = GlobalBroadcast() if len(args) == 2: request.deviceInstanceRangeLowLimit = int(args[0]) request.deviceInstanceRangeHighLimit = int(args[1]) if _debug: WhoIsIAmConsoleCmd._debug(" - request: %r", request) # give it to the application this_application.request(request) except Exception, e: WhoIsIAmConsoleCmd._exception("exception: %r", e) def do_iam(self, args): """iam""" args = args.split() if _debug: WhoIsIAmConsoleCmd._debug("do_iam %r", args) try: # build a request request = IAmRequest() request.pduDestination = GlobalBroadcast() # set the parameters from the device object request.iAmDeviceIdentifier = this_device.objectIdentifier request.maxAPDULengthAccepted = this_device.maxApduLengthAccepted request.segmentationSupported = this_device.segmentationSupported request.vendorID = this_device.vendorIdentifier if _debug: WhoIsIAmConsoleCmd._debug(" - request: %r", request) # give it to the application this_application.request(request) except Exception, e: WhoIsIAmConsoleCmd._exception("exception: %r", e) def do_rtn(self, args): """rtn <addr> <net> ... """ args = args.split() if _debug: WhoIsIAmConsoleCmd._debug("do_rtn %r", args) # safe to assume only one adapter adapter = this_application.nsap.adapters[0] if _debug: WhoIsIAmConsoleCmd._debug(" - adapter: %r", adapter) # provide the address and a list of network numbers router_address = Address(args[0]) network_list = [int(arg) for arg in args[1:]] # pass along to the service access point this_application.nsap.add_router_references(adapter, router_address, network_list) bacpypes_debugging(WhoIsIAmConsoleCmd) # # __main__ # try: # parse the command line arguments args = ConfigArgumentParser(description=__doc__).parse_args() if _debug: _log.debug("initialization") if _debug: _log.debug(" - args: %r", args) # make a device object this_device = LocalDeviceObject( objectName=args.ini.objectname, objectIdentifier=int(args.ini.objectidentifier), maxApduLengthAccepted=int(args.ini.maxapdulengthaccepted), segmentationSupported=args.ini.segmentationsupported, vendorIdentifier=int(args.ini.vendoridentifier), ) # build a bit string that knows about the bit names pss = ServicesSupported() pss['whoIs'] = 1 pss['iAm'] = 1 pss['readProperty'] = 1 pss['writeProperty'] = 1 # set the property value to be just the bits this_device.protocolServicesSupported = pss.value # make a simple application this_application = WhoIsIAmApplication(this_device, args.ini.address) # get the services supported services_supported = this_application.get_services_supported() if _debug: _log.debug(" - services_supported: %r", services_supported) # let the device object know this_device.protocolServicesSupported = services_supported.value # make a console this_console = WhoIsIAmConsoleCmd() _log.debug("running") run() except Exception, e: _log.exception("an error has occurred: %s", e) finally: _log.debug("finally")

Answer 1

在this_console = WhoIsIAmConsoleCmd()之后，你能写this_console.do_iam('')吗？在