嵌入bash脚本里短的Python脚本 [英] embedding short python scripts inside a bash script

问题描述

我想嵌入短的Python脚本的文本的bash脚本内，用于在说，我的的.bash_profile 。什么是去这样做这样的事情的最好方法？

I'd like to embed the text of short python scripts inside of a bash script, for use in say, my .bash_profile. What's the best way to go about doing such a thing?

解决方案我到目前为止是调用蟒蛇间preTER与 -c 选项，并告诉间preTER到 EXEC 标准输入。从那里，我可以建立简单的工具，如下面，让我来处理使用文字在我的交互提示：

The solution I have so far is to call the python interpreter with the -c option, and tell the interpreter to exec whatever it reads from stdin. From there, I can build simple tools like the following, allowing me to process text for use in my interactive prompt:

function pyexec() {
    echo "$(/usr/bin/python -c 'import sys; exec sys.stdin.read()')"
}

function traildirs() {
    pyexec <<END
trail=int('${1:-3}')
import os
home = os.path.abspath(os.environ['HOME'])
cwd = os.environ['PWD']
if cwd.startswith(home):
    cwd = cwd.replace(home, '~', 1)
parts = cwd.split('/')
joined = os.path.join(*parts[-trail:])
if len(parts) <= trail and not joined.startswith('~'):
    joined = '/'+joined
print joined
END
}

export PS1="\h [\$(traildirs 2)] % "

此方法略有气味好笑我虽然，我想知道这种方式可能是什么替代这样做。

This approach smells slightly funny to me though, and I'm wondering what alternatives to doing it this way might be.

我的bash脚本编程技能是pretty简陋，所以我听到的话，我做的东西从bash的跨preTER的角度看傻了特别感兴趣。

My bash scripting skills are pretty rudimentary, so I'm particularly interested to hear if I'm doing something silly from the bash interpreter's perspective.

推荐答案

蟒蛇间preTER接受 - 命令行的同义词关于标准输入这样你就可以取代电话一起pyexec：

The python interpreter accepts - on the command line as a synonym for stdin so you can replace the calls to pyexec with:

python - <<END

请参阅命令行参考这里。

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