实时提取.exe的输出并存储

Question

我有一个产生实时数据的.exe程序。我想在实时运行程序时提取输出，但是这是我第一次尝试，所以我需要帮助来接近这个。

我用下面的文字打开了它:

cmd = r'/Applications/StockSpy Realtime Stocks Quote.app/Contents/MacOS/StockSpy Realtime Stocks Quote'
import subprocess
with open('output.txt', 'wb') as f:
subprocess.check_call(cmd, stdout=f)
# to read line by line
with open('output.txt') as f:
for line in f:
print(line)
# output = qx(cmd)

，目的是存储输出。但是，它不保存任何输出，我得到一个空白的文本文件。

我通过以下代码保存了输出:

from subprocess import STDOUT, check_call as x
with open(os.devnull, 'rb') as DEVNULL, open('output.txt', 'wb') as f:
x(cmd, stdin=DEVNULL, stdout=f, stderr=STDOUT)

从我如何得到所有的输出从我的。exe使用子进程和Popen?

Answer 1

你想做的事情可以用python实现，使用这样的东西:

import subprocess
with subprocess.Popen(['/path/to/executable'], stdout=subprocess.PIPE) as proc:
data = proc.stdout.read()   # the data variable will contain the 
# what would usually be the output 
"""Do something with data..."""