上下文 - 我有一個Python腳本,讀取音樂文件夾,並打開每個音樂文件一次一個VLC播放器(1首歌曲將播放,VLC將關閉,然後另一個將播放等等等等)。當我從IDE或Terminal執行python腳本時,腳本成功運行。但是,當我通過Cron作業執行它時,它會失敗。Python腳本計劃通過Cron作業失敗
Python腳本 - 請注意,我已禁用循環測試目的。
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作業日誌 -
> [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
如何解決這個問題?
這是因爲通過cron執行的作業沒有設置DISPLAY環境變量(換句話說,默認情況下是非GUI模式),並且無法與顯示服務器通信。要麼設置顯示變量(hackish),要麼因爲錯誤提示使用'cvlc'。 – SuperSaiyan