[Tutor] subprocess Popen PIPE error

[Sean Carolan]

What am I doing wrong here?

>>> from subprocess import Popen, PIPE
>>> cmd = 'ls -l'
>>> p = Popen(cmd, stdout=PIPE, stderr=PIPE)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib64/python2.4/subprocess.py", line 550, in __init__
    errread, errwrite)
  File "/usr/lib64/python2.4/subprocess.py", line 993, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory