2017-04-15 78 views
1

上下文 - 我有一个Python脚本,读取音乐文件夹,并打开每个音乐文件一次一个VLC播放器(1首歌曲将播放,VLC将关闭,然后另一个将播放等等等等)。当我从IDE或Terminal执行python脚本时,脚本成功运行。但是,当我通过Cron作业执行它时,它会失败。Python脚本计划通过Cron作业失败

Python脚本 - 请注意,我已禁用循环测试目的。

import os,subprocess 
my_path = '/home/tushar/Music/Devotional/' 
songs_list = os.listdir(my_path) 
song_str = '' 
#for song in songs_list: 
    #subprocess.run(["vlc", my_path+song]) 
subprocess.run(["vlc", "/home/tushar/PycharmProjects/Morning Devotional Songs/Ganesha.opus"]) 

crontab -e命令

47 10 * * * python3 /home/tushar/PycharmProjects/Morning\ Devotional\ Songs/main.py >> /var/log/myjob.log 2>&1 

cron作业日志 -

> [000055ed64567cf8] core interface error: no suitable interface module 
> [000055ed6445a148] core libvlc error: interface "globalhotkeys,none" 
> initialization failed [000055ed64567cf8] dbus interface error: Failed 
> to connect to the D-Bus session daemon: Unable to autolaunch a 
> dbus-daemon without a $DISPLAY for X11 [000055ed64567cf8] core 
> interface error: no suitable interface module [000055ed6445a148] core 
> libvlc error: interface "dbus,none" initialization failed 
> [000055ed6445a148] core libvlc: Running vlc with the default 
> interface. Use 'cvlc' to use vlc without interface. [000055ed64567cf8] 
> qt4 interface error: Could not connect to X server [000055ed64567cf8] 
> skins2 interface error: cannot initialize OSFactory [000055ed64567cf8] 
> [cli] lua interface: Listening on host "*console". VLC media player 
> 2.2.4 Weatherwax Command Line Interface initialized. Type `help' for help. 
> 
> Shutting down. [000055ed64567cf8] [cli] lua interface: Requested 
> shutdown. [000055ed64567cf8] [cli] lua interface error: Error loading 
> script /usr/lib/vlc/lua/intf/cli.luac: lua/intf/modules/host.lua:279: 
> Interrupted. [00007f977c0178c8] core stream error: cannot pre fill 
> buffer 

如何解决这个问题?

+1

这是因为通过cron执行的作业没有设置DISPLAY环境变量(换句话说,默认情况下是非GUI模式),并且无法与显示服务器通信。要么设置显示变量(hackish),要么因为错误提示使用'cvlc'。 – SuperSaiyan

回答

1

您的cron作业日志为您的工作失败提供了线索。

Use 'cvlc' to use vlc without interface. [000055ed64567cf8] qt4 interface error: Could not connect to X server

这意味着什么是Y X服务器没有发现,你必须不喜欢这个界面运行相同的任务:

subprocess.run(["cvlc", "/home/tushar/PycharmProjects/Morning Devotional Songs/Ganesha.opus"]) 

cvlc就像VLC没有界面和命令行上。试试吧,让我们知道!

+0

非常感谢。有效。 –

+0

不客气。 – Boggartfly