show flight price on OS X system status bar

flight_mon.py

# coding: utf8
from Foundation import *
from AppKit import *
from PyObjCTools import AppHelper
import os
import re

start_time = NSDate.date()


class MyApplicationAppDelegate(NSObject):

    state = 'idle'

    def applicationDidFinishLaunching_(self, sender):
        NSLog("Application did finish launching.")

        self.statusItem = NSStatusBar.systemStatusBar().statusItemWithLength_(
            NSVariableStatusItemLength)
        self.statusItem.setTitle_(u"Hello World")
        self.statusItem.setHighlightMode_(TRUE)
        self.statusItem.setEnabled_(TRUE)

        # menu
        self.menu = NSMenu.alloc().init()
        menuitem = NSMenuItem.alloc().initWithTitle_action_keyEquivalent_(
            'Sync...', 'sync:', '')
        self.menu.addItem_(menuitem)
        menuitem = NSMenuItem.alloc().initWithTitle_action_keyEquivalent_(
            'Quit', 'terminate:', '')
        self.menu.addItem_(menuitem)
        self.statusItem.setMenu_(self.menu)

        # Get the timer going
        self.timer = NSTimer.alloc().initWithFireDate_interval_target_selector_userInfo_repeats_(
            start_time, 60.0, self, 'tick:', None, True)
        NSRunLoop.currentRunLoop().addTimer_forMode_(
            self.timer, NSDefaultRunLoopMode)
        self.timer.fire()

    def sync_(self, notification):
        print "sync"

    def tick_(self, notification):
        # print self.state
        cmd = open('cmd.txt').read().strip()
        os.system(cmd)
        output = open('output.html').read()
        result = output[output.index('<table cellspacing="1" id="FFCR"'):
                        output.index('所顯示票價為一位成人的票價')]
        prices = re.findall(r"value='([^']*)'", result)
        assert len(prices) == 49
        self.statusItem.setTitle_(' '.join('HKD ' + p for p in prices[24:25]))

        newmenu = NSMenu.alloc().init()
        for i in xrange(15, 15 + 7):
            for j in xrange(21, 21 + 7):
                menuitem = NSMenuItem.alloc().initWithTitle_action_keyEquivalent_(
                    '2.{}-2.{} HKD {}'.format(i, j, prices[7 * (i - 15) + (j - 21)]), 'sync:', '')
                newmenu.addItem_(menuitem)
        self.statusItem.setMenu_(newmenu)
        del self.menu
        self.menu = newmenu

        print 'updated'

if __name__ == "__main__":
    app = NSApplication.sharedApplication()
    delegate = MyApplicationAppDelegate.alloc().init()
    app.setDelegate_(delegate)
    AppHelper.runEventLoop()