将数据传递给 subprocess.check_output

我想调用一个脚本，将字符串的内容通过管道传输到其标准输入并检索其标准输出。

我不想接触真正的文件系统，所以我无法为其创建真正的临时文件。

using subprocess.check_output剧本写什么我都能得到；我怎样才能将输入字符串放入其标准输入中？

subprocess.check_output([script_name,"-"],stdin="this is some input")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/subprocess.py", line 537, in check_output
    process = Popen(stdout=PIPE, *popenargs, **kwargs)
  File "/usr/lib/python2.7/subprocess.py", line 672, in __init__
    errread, errwrite) = self._get_handles(stdin, stdout, stderr)
  File "/usr/lib/python2.7/subprocess.py", line 1043, in _get_handles
    p2cread = stdin.fileno()
AttributeError: 'str' object has no attribute 'fileno'

Use Popen.communicate代替subprocess.check_output.

from subprocess import Popen, PIPE

p = Popen([script_name, "-"], stdin=PIPE, stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate("this is some input")