最简单的方法，我们不推荐的：

The simplest way, not recommendable:

import os
# ...

os.system(commandString)

更好地利用子，例如：

import subprocess
# ...

subprocess.call(["echo", i], shell=True)

请注意，壳牌逃逸是这些功能的工作，他们如果获得通过未经验证的用户输入的一个安全漏洞。

Note that shell escaping is your job with these functions and they're a security hole if passed unvalidated user input.

如果您不需要外壳的功能（如变量扩展，通配符，...），从未使用shell =真。然后，你不需要做自己逃跑等。

If you do not need shell features (such as variable expansion, wildcards, ...), never use shell=True. Then you don't need to do escaping yourself etc.

有像 subprocess.call 另一个功能： subprocess.check_call 。它酷似电话，只是它抛出一个异常，如果执行的命令用非零退出code返回。这通常是在脚本和实用程序可行的行为。

There is another function like subprocess.call: subprocess.check_call. It is exactly like call, just that it throws an exception if the command executed returned with a non-zero exit code. This is often feasible behaviour in scripts and utilities.