Source code for goes

#!/usr/bin/python

import sys
import urllib
#import PyTango
#import matplotlib.pyplot as plot

class Entry(object):
    """this is some kind of entry"""
    def __init__(self, values):
        self.date = '-'.join(values[:3])
        self.time = values[4]
        self.status10 = int(values[6])
        self.mev10 = float(values[7])
        self.status30 = int(values[8])
        self.mev30 = float(values[9])

    def __repr__(self):
        return ('<{0.date} {0.time}; >10Mev {0.mev10} ({0.status10}); '
                '>30Mev {0.mev30} ({0.status30})>'.format(self))


class PyDevice(object): #PyTango.DeviceClass):
    """this is some kind of device"""
    cmd_list = {}
    attr_list = {'mev10': [[],
                          #[[PyTango.ArgType.DevFloat,
                          #  PyTango.AttrDataFormat.SCALAR,
                          #  PyTango.AttrWriteType.READ],
                           {'polling period': 20000}]}
    def __init__(self, name):
        PyTango.DeviceClass.__init__(self, name)
        self.set_type("TestDevice")


class PyDeviceExp(object): #PyTango.Device_4Impl):
    """this is some other kind of device"""
    def __init__(self, cl, name):
        PyTango.Device_4Impl.__init__(self, cl, name)
        self.info_stream('In PyDeviceExp.__init__')
        PyDeviceExp.init_device(self)

    def is_get_data_allowed(self):
        """some method that checks if the data are allowed"""
        return self.get_state() == PyTango.DevState.ON

    def get_data(self):
        """this is what you use to get the data"""
        self.data = data = []
        with open('ace_sis_5m.txt') as datafile:
            for line in datafile:
                if line.startswith((':', '#')):
                    continue
                data.append(Entry(line.split()))

        print data

    def read_mev10(self, the_att):
        """with this you get the mev10!"""
        self.data = data = []
        self.info_stream("read_mev10")
        page = urllib.urlopen('http://www.swpc.noaa.gov/ftpdir/lists/ace/ace_sis_5m.txt')
        for line in page:
            if line.startswith((':', '#')):
                continue
            data.append(Entry(line.split()))
        #plot.plot([d.mev10 for d in data if d.status10 != 9])
        #plot.savefig('proton.png')

        the_att.set_value(data[-1].mev10)

    def is_mev10_allowed(self, req_type):
        """you can get the mev10 only if you are allowed"""
        return self.get_state() in (PyTango.DevState.ON,)

    def init_device(self):
        """this is used by Tango"""
        self.info_stream('In Python init_device method')
        self.set_state(PyTango.DevState.ON)

if __name__ == '__main__':
    util = PyTango.Util(sys.argv)
    util.add_class(PyDevice, PyDeviceExp)

    U = PyTango.Util.instance()
    U.server_init()
    U.server_run()