编译C/C ++程序并通过Python将标准输出存储在文件中 [英] Compile a C/C++ Program and store standard output in a File via Python

问题描述

假设我有一个名为userfile.c的C/C ++文件.

Let's say I have a C/C++ file named userfile.c.

使用Python，我如何调用本地gcc编译器，以便编译文件并生成可执行文件?更具体地说，我想通过某些文件input.txt提供一些输入(stdin)，并且我想将标准输出保存到另一个名为output.txt的文件中.我看到了一些需要使用子流程的文档，但是我不确定如何调用它以及如何提供自定义输入.

Using Python, how can I invoke the local gcc compiler so that the file is compiled and an executable is made? More specifically, I would like to provide some input (stdin) via some file input.txt and I want to save the standard output into another file called output.txt. I saw some documentation that I will need to use subprocess, but I'm not sure how to call that and how to provide custom input.

推荐答案

一个简单的解决方案如下:

A simple solution will be as given below:

import subprocess

if subprocess.call(["gcc", "test.c"]) == 0:
    subprocess.call(["./a.out <input.txt >output.txt"], shell=True)
else: print "Compilation errors"

2个警告:

1. 我正在硬编码东西.您可能要参数化所有这些内容.
根据Python文档，
2. 将 shell 设置为 True 是安全隐患.

1. I am hardcoding stuff. You may want to parameterize and all that.
2. Setting shell to True, is a security risk, per Python documentation.

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