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asyncdbus-0.6.1
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A zero-dependency async DBus library
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | asyncdbus-0.6.1 |
| نام | asyncdbus |
| نسخه کتابخانه | 0.6.1 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Matthias Urlichs |
| ایمیل نویسنده | matthias@urlichs.de |
| آدرس صفحه اصلی | https://github.com/M-o-a-T/asyncdbus |
| آدرس اینترنتی | https://pypi.org/project/asyncdbus/ |
| مجوز | MIT |
# asyncdbus
This is a fork of python-dbus-next. It uses anyio under the hood, thus is
compatible with Trio as well as asyncio.
Support for GLib has been removed. If you need that, use Trio in guest
mode.
This library is available on PyPi as [asyncdbus](https://pypi.org/project/asyncdbus/).
The rest of this document is from dbus-next and has not been modified.
# python-dbus-next
The next great DBus library for Python.
[Documentation](https://python-dbus-next.readthedocs.io/en/latest/)
[Chat](https://discord.gg/UdbXHVX)
python-dbus-next is a Python library for DBus that aims to be a fully featured high level library primarily geared towards integration of applications into Linux desktop and mobile environments.
Desktop application developers can use this library for integrating their applications into desktop environments by implementing common DBus standard interfaces or creating custom plugin interfaces.
Desktop users can use this library to create their own scripts and utilities to interact with those interfaces for customization of their desktop environment.
python-dbus-next plans to improve over other DBus libraries for Python in the following ways:
* Zero dependencies and pure Python 3.
* Support for multiple IO backends including anyio and the GLib main loop.
* Nonblocking IO suitable for GUI development.
* Target the latest language features of Python for beautiful services and clients.
* Complete implementation of the DBus type system without ever guessing types.
* Integration tests for all features of the library.
* Completely documented public API.
## Installing
This library is available on PyPi as [dbus-next](https://pypi.org/project/dbus-next/).
```
pip3 install dbus-next
```
## The Client Interface
To use a service on the bus, the library constructs a proxy object you can use to call methods, get and set properties, and listen to signals.
For more information, see the [overview for the high-level client](https://python-dbus-next.readthedocs.io/en/latest/high-level-client/index.html).
This example connects to a media player and controls it with the [MPRIS](https://specifications.freedesktop.org/mpris-spec/latest/) DBus interface.
```python
from asyncdbus import MessageBus
import anyio
async def main():
bus = await MessageBus().connect()
# the introspection xml would normally be included in your project, but
# this is convenient for development
introspection = await bus.introspect('org.mpris.MediaPlayer2.vlc', '/org/mpris/MediaPlayer2')
obj = await bus.get_proxy_object('org.mpris.MediaPlayer2.vlc', '/org/mpris/MediaPlayer2', introspection)
player = await obj.get_interface('org.mpris.MediaPlayer2.Player')
properties = await obj.get_interface('org.freedesktop.DBus.Properties')
# call methods on the interface (this causes the media player to play)
await player.call_play()
volume = await player.get_volume()
print(f'current volume: {volume}, setting to 0.5')
await player.set_volume(0.5)
# listen to signals
def on_properties_changed(interface_name, changed_properties, invalidated_properties):
for changed, variant in changed_properties.items():
print(f'property changed: {changed} - {variant.value}')
properties.on_properties_changed(on_properties_changed)
await anyio.sleep(99999)
anyio.run(main)
```
## The Service Interface
To define a service on the bus, use the `ServiceInterface` class and decorate class methods to specify DBus methods, properties, and signals with their type signatures.
For more information, see the [overview for the high-level service](https://python-dbus-next.readthedocs.io/en/latest/high-level-service/index.html).
```python
from asyncdbus.service import ServiceInterface, method, dbus_property, signal, Variant
from asyncdbus import MessageBus
import anyio
class ExampleInterface(ServiceInterface):
def __init__(self, name):
super().__init__(name)
self._string_prop = 'kevin'
@method()
def Echo(self, what: 's') -> 's':
return what
@method()
def GetVariantDict() -> 'a{sv}':
return {
'foo': Variant('s', 'bar'),
'bat': Variant('x', -55),
'a_list': Variant('as', ['hello', 'world'])
}
@dbus_property()
def string_prop(self) -> 's':
return self._string_prop
@string_prop.setter
def string_prop_setter(self, val: 's'):
self._string_prop = val
@signal()
def signal_simple(self) -> 's':
return 'hello'
async def main():
bus = await MessageBus().connect()
interface = ExampleInterface('test.interface')
await bus.export('/test/path', interface)
# now that we are ready to handle requests, we can request name from D-Bus
await bus.request_name('test.name')
# wait indefinitely
await anyio.sleep(99999)
anyio.run(main)
```
## The Low-Level Interface
The low-level interface works with DBus messages directly.
For more information, see the [overview for the low-level interface](https://python-dbus-next.readthedocs.io/en/latest/low-level-interface/index.html).
```python
from asyncdbus.message import Message, MessageType
from asyncdbus import MessageBus
import anyio
import json
async def main():
bus = await MessageBus().connect()
reply = await bus.call(
Message(destination='org.freedesktop.DBus',
path='/org/freedesktop/DBus',
interface='org.freedesktop.DBus',
member='ListNames'))
if reply.message_type == MessageType.ERROR:
raise Exception(reply.body[0])
print(json.dumps(reply.body[0], indent=2))
anyio.run(main)
```
## Projects that use python-dbus-next
* The [Playerctl](https://github.com/altdesktop/playerctl) test suite
* [i3-dstatus](https://github.com/altdesktop/i3-dstatus)
## Contributing
Contributions are welcome. Development happens on [Github](https://github.com/altdesktop/python-dbus-next).
Before you commit, run `make` to run the linter, code formatter, and the test suite.
# Copyright
You can use this code under an MIT license (see LICENSE).
© 2019, Tony Crisci
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.7.0 | Python |
نحوه نصب
نصب پکیج whl asyncdbus-0.6.1:
pip install asyncdbus-0.6.1.whl
نصب پکیج tar.gz asyncdbus-0.6.1:
pip install asyncdbus-0.6.1.tar.gz