python dbus库
python dbus库
cat dbus-cmd.py
python打印引入模块的文件路径
https://fiime.cn/blog/241146
#!/usr/bin/env python3
import sys
import dbus.mainloop.glib
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
bus = dbus.SystemBus()
print(dbus.__file__)
o = bus.get_object('net.reactivated.Fprint', '/net/reactivated/Fprint/Manager', introspect=False)
print(o)
o = o.GetDefaultDevice()
print(o)
o = bus.get_object('net.reactivated.Fprint', o, introspect=False)
print(o)
o = dbus.Interface(o, 'net.reactivated.Fprint.Device')
print(o)
#print(o.RunCmd(sys.argv[1]))
输出
print(dbus.__file__)
/usr/lib/python3/dist-packages/dbus/__init__.py
方法1
python3 自带了dbus包，所以我们直接应用，例子：
import dbus
session_bus = dbus.SessionBus()
proxy = session_bus.get_object('com.deepin.filemanager.daemon', '/com/deepin/filemanager')
proxy_dev = dbus.Interface(proxy, dbus_interface='org.freedesktop.DBus.Introspectable')
方法2
使用第三方pydbus,先安装
pip3 install pydbus
例子：获取授权状态
from pydbus import SystemBus
bus = SystemBus()
proxy = bus.get(bus_name='com.deepin.license', object_path='/com/deepin/license/Info')
print(proxy.AuthorizationState)
我采用的是pydbus这个库，操作简单。
dbus-python这个库使用途中获取不到属性了,还没有仔细研究。这个问题解决：
https://dbus.freedesktop.org/doc/dbus-specification.html#standard-interfaces-properties
import dbus
bus = dbus.SystemBus()
proxy = bus.get_object(bus_name='com.deepin.license', object_path='/com/deepin/license/Info')
_iface = dbus.Interface(proxy, dbus.PROPERTIES_IFACE)
s1 = _iface.Get('com.deepin.license.Info', 'AuthorizationState')
print(s1)
这个方法是真的不好用
官网
https://github.com/freedesktop/dbus-python
https://pydbus.readthedocs.io/en/latest/installation.html
https://wiki.python.org/moin/DbusExamples
11
The D-Bus library is a messaging library used by various desktop environments (GNOME, KDE, etc) for interprocess communication.
There are multiple Python bindings for DBus:
GDbus and QtDbus are wrappers over the C/C++ APIs of GLib and Qt
pydbus is a modern, pythonic API with the goal of being as invisible a layer between the exported API and its user as possible
dasbus is a Python3-only alternative to pydbus with additional features and better flexibility
dbus-python is a legacy API, built with a deprecated dbus-glib library, and involving a lot of type-guessing (despite “explicit is better than implicit” and “resist the temptation to guess”).
txdbus is a native Python implementation of the D-Bus protocol for the Twisted networking framework.
dbus-next is a native Python library for D-Bus with support for multiple IO backends suitable for GUI develeopment and cross platform projects.
See also: DBusBindings on Freedesktop wiki.
The dbus-viewer and qdbusviewer programs let you browse through the services and interfaces available on your system.
pydbus
For more information see pydbus’s Readme.
Introspection