在Python脚本中检查交互式shell [英] Checking for interactive shell in a Python script

问题描述

我需要确定调用我的Python脚本的外壳是否处于交互模式.如果处于交互模式，则程序应将输出通过管道传递到less(1)以便于阅读.如果没有，它应该只将其输出打印到stdout，以便将其通过管道传输到打印机，文件或其他寻呼机.

I need to determine whether the shell which invoked my Python script was in interactive mode or not. If it was in interactive mode, the program should pipe output to less(1) for easy reading. If not, it should simply print its output to stdout, to allow it to be piped away to a printer, file, or a different pager.

在shell脚本中，我会检查是否定义了提示变量$ PS1，或者在$-变量中存储的标志中寻找-i选项.

In a shell script, I would have checked if the prompt variable $PS1 was defined, or looked for the -i option among the flags stored in the $- variable.

从Python内部测试交互性的首选方法是什么?

What is the preferred method for testing interactivity from within Python?

推荐答案

这通常效果很好

import os, sys
if os.isatty(sys.stdout.fileno()):
    ...

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