Python 带线程的PyGTK，gobject，从另一个线程发送信号？

我是Python新手，我想用pywebkitgtk打开一个网页（这里是google.com）
然后用另一个线程倒计时，
时间到了，向webview发送一个信号，将html作为文件下载

有没有办法在gtk.main中打开一个网页，在后台线程中倒计时，然后向GUI发送一个信号，让GUI做点什么

参考资料：

这是我的代码，它无法运行，我想我不理解Python的

类

#!/usr/bin/env python
import sys, threading
import gtk, webkit
import time
import gobject

gobject.threads_init()
google = "http://www.google.com"

class WebView(webkit.WebView):
    #return page's content
    def get_html(self):
        self.execute_script('oldtitle=document.title;document.title=document.documentElement.innerHTML;')
    html = self.get_main_frame().get_title()
    self.execute_script('document.title=oldtitle;')
    return html

#wait 5 senconds and send a signal
class TimeSender(gobject.GObject, threading.Thread):
    def __init__(self):
        self.__gobject_init__()
        threading.Thread.__init__(self)

    def run(self):
        print "sleep 5 seconds"
        time.sleep(5)
        self.emit("Sender_signal")

gobject.type_register(TimeSender)
gobject.signal_new("Sender_signal", TimeSender, gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ())

#PywebkitGTK, open google.com, receive signal
class Window(gtk.Window, gobject.GObject):
    def __init__(self, time_sender, url):
        self.__gobject_init__()
        gtk.Window.__init__(self)
        time_sender.connect('Sender_signal', self._finished_loading)
        self._url = url

    def open_page(self):
        view = WebView()
        view.get_html()
        view.open(self._url)
        self.add(view)
        gtk.main()
    #write html to file
    def _finished_loading(self, view):
        with open("pagehtml.html", 'w') as f:
            f.write(view.get_html())
        gtk.main_quit()

'''
def user_callback(object):
    with open("pagehtml2.html", 'w') as f:
        f.write(view.get_html())
    gtk.main_quit()
'''

if __name__ == '__main__':
    time_sender = TimeSender()
    window = Window(time_sender, google)
    #time_sender.connect("Sender_signal", user_callback)
    time_sender.start()
    window.open_page()

我有一个错误：

AttributeError:“TimeSender”对象没有属性“get\u html”

---

我困惑了几天。。。谢谢

看起来您对信号/对象和线程感到困惑_finished_加载方法没有将视图作为参数获取，因为您没有传递它。如果你让它全球化，它应该会起作用。下面的代码按预期工作

#!/usr/bin/env python
import sys, threading
import gtk, webkit
import time
import gobject

gobject.threads_init()
google = "http://www.google.com"

class WebView(webkit.WebView):
    #return page's content
    def get_html(self):
        self.execute_script('oldtitle=document.title;document.title=document.documentElement.innerHTML;')
        html = self.get_main_frame().get_title()
        self.execute_script('document.title=oldtitle;')
        return html

#wait 5 senconds and send a signal
class TimeSender(gobject.GObject, threading.Thread):
    def __init__(self):
        self.__gobject_init__()
        threading.Thread.__init__(self)

    def myEmit(self):
        window.emit("Sender_signal")

    def run(self):
        print "sleep 5 seconds"
        time.sleep(5)
        gobject.idle_add(self.myEmit)


gobject.type_register(TimeSender)

#PywebkitGTK, open google.com, receive signal
class Window(gtk.Window, gobject.GObject):
    def __init__(self, time_sender, url):
        self.__gobject_init__()
        gtk.Window.__init__(self)
        self.connect('Sender_signal', self._finished_loading)
        self._url = url

    def open_page(self):
        self.view = WebView()
        self.view.get_html()
        self.view.open(self._url)
        self.add(self.view)
        gtk.main()
    #write html to file
    def _finished_loading(self, view1):
        with open("pagehtml.html", 'w') as f:
            f.write(self.view.get_html())
        gtk.main_quit()

'''
def user_callback(object):
    with open("pagehtml2.html", 'w') as f:
        f.write(view.get_html())
    gtk.main_quit()
'''

if __name__ == '__main__':
    gobject.signal_new("Sender_signal", Window, gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ())
    time_sender = TimeSender()
    window = Window(time_sender, google)
    #time_sender.connect("Sender_signal", user_callback)
    time_sender.start()
    window.open_page()