使用python在Ubuntu 18.10上控制音量OSD

import subprocess

def set_volume(volume):
    subprocess.run(['amixer', '-D', 'pulse', 'sset', 'Master', str(volume)+'%'])

def increase_volume(step):
    subprocess.run(['amixer', '-D', 'pulse', 'sset', 'Master', str(step)+'%+'])

def decrease_volume(step):
    subprocess.run(['amixer', '-D', 'pulse', 'sset', 'Master', str(step)+'%-'])

def mute_volume():
    subprocess.run(['amixer', '-D', 'pulse', 'sset', 'Master', 'toggle'])

from pydbus import SessionBus

def show_osd(message):
    bus = SessionBus()
    notifications = bus.get('.Notifications')
    notifications.Notify('Volume Control', 0, '', '音量', message, [], {}, -1)

import subprocess
from pydbus import SessionBus

def set_volume(volume):
    subprocess.run(['amixer', '-D', 'pulse', 'sset', 'Master', str(volume)+'%'])

def increase_volume(step):
    subprocess.run(['amixer', '-D', 'pulse', 'sset', 'Master', str(step)+'%+'])

def decrease_volume(step):
    subprocess.run(['amixer', '-D', 'pulse', 'sset', 'Master', str(step)+'%-'])

def mute_volume():
    subprocess.run(['amixer', '-D', 'pulse', 'sset', 'Master', 'toggle'])

def show_osd(message):
    bus = SessionBus()
    notifications = bus.get('.Notifications')
    notifications.Notify('Volume Control', 0, '', '音量', message, [], {}, -1)

# 控制音量示例
set_volume(50)  # 设置音量为50%
increase_volume(10)  # 增加音量10%
decrease_volume(5)  # 减少音量5%
mute_volume()  # 静音或取消静音

# 显示音量OSD示例
show_osd('音量已调整')  # 显示音量OSD，消息为'音量已调整'