问题描述
通常我可以通过改变 sys.stdout 的值来改变 Python 中的标准输出.但是，这似乎只影响 print 语句.那么，有什么方法可以抑制通过 Python 中的 os.system() 命令运行的程序的输出(到控制台)?
Usually I can change stdout in Python by changing the value of sys.stdout. However, this only seems to affect print statements. So, is there any way I can suppress the output (to the console), of a program that is run via the os.system() command in Python?
推荐答案
您可以考虑通过 subprocess.Popen 运行程序，与 subprocess.PIPE 通信，然后将该输出推送到您想要的任何位置，但按原样，os.system 只运行命令，不执行其他任何操作.
You could consider running the program via subprocess.Popen, with subprocess.PIPE communication, and then shove that output where ever you would like, but as is, os.system just runs the command, and nothing else.
from subprocess import Popen, PIPE
p = Popen(['command', 'and', 'args'], stdout=PIPE, stderr=PIPE, stdin=PIPE)
output = p.stdout.read()
p.stdin.write(input)
在我看来要灵活得多.您可能需要查看完整文档:Python 子流程模块
Much more flexible in my opinion. You might want to look at the full documentation: Python Subprocess module
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