在代理上调用 dbus 方法而不阻塞（或没有超时）答案

【问题标题】：call dbus method on proxy without blocking (or no timeout)在代理上调用 dbus 方法而不阻塞（或没有超时）
【发布时间】：2010-12-10 10:56:00
【问题描述】：

我正在尝试锁定我的 GNOME 屏幕保护程序，但是 dbus .Lock 方法正在等待响应。我希望它不等待响应（只需发送信号以锁定屏幕保护程序，然后继续生活）。我该怎么做呢？（实际上，这段代码在一个线程中，所以我继续生活，但我仍然遇到讨厌的错误）

session_bus = dbus.SessionBus()                                                                                                                                       
screensaver_proxy = session_bus.get_object('org.gnome.ScreenSaver', '/org/gnome/ScreenSaver')                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
locked = screensaver_proxy.Lock(dbus_interface='org.gnome.ScreenSaver')
print "HELLO" # will never get called, due to:
/*
  locked = screensaver_proxy.Lock(dbus_interface='org.gnome.ScreenSaver')
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
    message, timeout)
  DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken
*/

【问题讨论】：

标签： python dbus

【解决方案1】：

呸。解决方案：http://dbus.freedesktop.org/doc/dbus-python/doc/tutorial.html#making-asynchronous-method-calls

【讨论】：

嗯。不幸的是，那里的文档并不广泛。在哪里提供reply_handler 和error_handler 参数？显然不在get_object。