在子进程命令中传递用双引号包裹的参数 [英] Passing arguments wrapped with double quotes in a subprocess command

问题描述

我正在使用 subprocess.check_output() 方法从 python 脚本中执行命令.有一些命令需要 "(双引号)出现在语法中.

I am using subprocess.check_output() method to execute commands from within the python script. There are some commands that need " (double quotes) to be present in syntax.

这是一个例子:

> drozer console connect -c "run app.package.info -a com.package.name"

如果我们从上面的命令中删除 "(双引号)，它会抛出错误.

It throws error if we remove " (double quotes) from above command.

我做了以下事情:

string = '\"run app.package.info -a com.package.name\"'
command = ['/usr/bin/drozer','console','connect','-c',string]
output = subprocess.check_output(command)

这让我出错:

*** Unknown syntax: "run app.package.info  -a com.package.name"

如何解决这个引号问题?

How can I solve this issue of quotes?

推荐答案

你不需要双引号.

您在 shell 命令中需要它们的原因是 shell 正在从字符串解析命令行，并将它们用作文本 run app.package.info -a com.package 的指示.name 应该放在一个 single 参数中:

The reason you need them with the shell command is that the shell is parsing the command line from a string, and it uses them as an indication that the text run app.package.info -a com.package.name should be placed in a single argument:

#!/usr/bin/env python
import subprocess

c_arg = 'run app.package.info -a com.package.name'
command = ['/usr/bin/drozer', 'console', 'connect', '-c', c_arg]
output = subprocess.check_output(command)
print("Got %r" % (output,))

当您使用代码启动进程时，您明确指定了各个参数，并且不会进行 shell 解析，因此不需要额外的引号.

When you’re using code to start a process, you explicitly specify individual arguments, and no shell parsing is going on, so there’s no need for the extra quotes.

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