管道 错误

#!/usr/bin/python

import popen2
writeMP, readMP = popen2.popen2("mplayer -quiet -slave /home/haha/bird/*.wmv")

请问这个程序怎么错啦？
出错提示：
MPlayer interrupted by signal 13 in module: unknown
- MPlayer crashed. This shouldn't happen.
  It can be a bug in the MPlayer code _or_ in your drivers _or_ in your
  gcc version. If you think it's MPlayer's fault, please read
  DOCS/HTML/en/bugreports.html and follow the instructions there. We can't and
  won't help unless you provide this information when reporting a possible bug.

谢谢！！！！

shell用 mplayer -quiet -slave /home/haha/bird/*.wmv 这个命令可以吗？
试试用绝对路径调用mplayer，传递系统环境变量给popen