我有以下代码,试图在Linux中启动每个“命令”。该模块尝试保持这两个命令运行,如果其中任何一个因任何原因崩溃。
执行代码时,抛出以下异常:
#!/usr/bin/env python
import subprocess
commands = [ ["screen -dmS RealmD top"], ["screen -DmS RealmD top -d 5"] ]
programs = [ subprocess.Popen(c) for c in commands ]
while True:
for i in range(len(programs)):
if programs[i].returncode is None:
continue # still running
else:
# restart this one
programs[i]= subprocess.Popen(commands[i])
time.sleep(1.0)
执行代码时,抛出以下异常:
Traceback (most recent call last):
File "./marp.py", line 82, in <module>
programs = [ subprocess.Popen(c) for c in commands ]
File "/usr/lib/python2.6/subprocess.py", line 595, in __init__
errread, errwrite)
File "/usr/lib/python2.6/subprocess.py", line 1092, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
我觉得我漏掉了一些显而易见的东西,有人能看出上面的代码有什么问题吗?
programs[i].poll()
而不是programs[i].returncode
。 - jfs