Error in python code

Please see the code and the error in the last.

from brisa.core.reactors import install_default_reactor
reactor = install_default_reactor()
print reactor

import os

from brisa.upnp.device import Device, Service
from brisa.upnp.device.service import StateVariable


class BinaryLight(Device):

    def __init__(self):
        Device.__init__(self,
                        'urn:schemas-upnp-org:device:BinaryLight:1',
                        'Binary Light device')


class SwitchPower(Service):

    def __init__(self):
        Service.__init__(self,
            开发者_高级运维             'SwitchPower',
                         'urn:schemas-upnp-org:service:SwitchPower:1',
                         '',
                         os.getcwd() + '/SwitchPower-scpd.xml')
        self.target = False
        self.status = False
        self.varin = StateVariable(self, "Status",
                              True, False, "boolean")
        self.varin.subscribe_for_update(self.varUpdateCallback)
        self.add_state_variable(self.varin)

    def varUpdateCallback(self, name, value):
        print name, 'was updated to', value

    def SetTarget(self, *args, **kwargs):
        self.target = kwargs['NewTargetValue']
        self.status = self.target
        self.set_state_variable('Status', self.target)
        print 'Light switched ', {'1': 'on', '0': 'off'}.get(self.target, None)
        return {}

    def GetTarget(self, *args, **kwargs):
        return {'RetTargetValue': self.target}

    def soap_GetStatus(self, *args, **kwargs):
        return {'ResultStatus': self.status}


if __name__ == '__main__':
    device = BinaryLight()
    device += SwitchPower()

    # Start device
    device.start()

    # Setup main loop
    reactor.add_after_stop_func(device.stop)
    reactor.main()

I am getting an error:-

ankit@ubuntu:~/Desktop$ python binary_light.py Could you please tell me where I am doing mistake??

Error:
Traceback (most recent call last):
  File "binary_light.py", line 8, in <module>
    from brisa.upnp.device import Device, Service
  File "/usr/local/lib/python2.6/dist-packages/brisa/upnp/device/__init__.py", line 8, in <module>
    from brisa.upnp.device.device import Device
  File "/usr/local/lib/python2.6/dist-packages/brisa/upnp/device/device.py", line 10, in <module>
    from brisa.core import log, config, webserver, network
  File "/usr/local/lib/python2.6/dist-packages/brisa/core/webserver.py", line 39, in <module>
    raise RuntimeError('Network is down.')
RuntimeError: Network is down.

NEW ERROR:

Traceback (most recent call last):
  File "binary_light.py", line 57, in <module>
    device = BinaryLight()
  File "binary_light.py", line 21, in __init__
    'Binary Light device')
  File "/usr/local/lib/python2.6/dist-packages/brisa/upnp/device/device.py", line 83, in __init__
    additional_headers=additional_ssdp_headers)
  File "/usr/local/lib/python2.6/dist-packages/brisa/upnp/ssdp.py", line 71, in __init__
    data_callback=self._datagram_received)
  File "/usr/local/lib/python2.6/dist-packages/brisa/core/network_listeners.py", line 188, in __init__
    self._create_socket(shared_socket)
  File "/usr/local/lib/python2.6/dist-packages/brisa/core/network_listeners.py", line 227, in _create_socket
    "Couldn't bind address")
brisa.core.network_listeners.CannotListenError

please let me know where I am doing mistake??

---

As others have mentioned, that's not an error. However, my guess would be that you have an error and something's going wrong somewhere or you wouldn't have bothered posting here. Try removing the print statement. Then let us know if you get any more "errors".

---

This is not an error. On line 3 you are printing the object "reactor".

---

(In response to updated question)

Well, the error suggests it can't find the network.

Looking at the code, trying doing this at the start of your script:

import brisa
brisa.__enable_offline_mode__ = True
from brisa.core.reactors import install_default_reactor