将输出命令重定向到变量或文件？ [英] Redirect an output command to a variable or file?

问题描述

我想写一个python脚本，这将允许我从一个命令的输出，并把它放入一个文件或变量（优选一个变量）。

I'm trying to write a python script that will allow me to take the output from a command and to put that into a file or variable (Preferability a variable).

在我的代码中，我已经将输出重定向到 StringIO（）对象。从这里，我想要输出一个命令，并把它放入 StringIO（）对象。

In my code, I have redirected the output to a StringIO() object. From that, I want take the output a command and to put it into that StringIO() object.

是我的代码示例：

from StringIO import StringIO
import sys

old_stdout = sys.stdout

result = StringIO()
sys.stdout = result

# This will output to the screen, and not to the variable
# I want this to output to the 'result' variable
os.system('ls -l')

$

此外，如何获取结果并将其放入字符串中？

Thanks in advance!!

推荐答案

import subprocess
sp = subprocess.Popen(['ls', '-l'], stdout=subprocess.PIPE)
output, _ = sp.communicate()
print "Status:", sp.wait()
print "Output:"
print output

这篇关于将输出命令重定向到变量或文件？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！