覆盖ipython退出函数 - 或添加钩子 [英] Override ipython exit function - or add hooks in to it

问题描述

在我的项目管理中，我使用以下内容嵌入iPython：

In my project manage, I am embedding iPython with:

from IPython import start_ipython
from traitlets.config import Config
c = Config()
c.TerminalInteractiveShell.banner2 = "Welcome to my shell"
c.InteractiveShellApp.extensions = ['autoreload']
c.InteractiveShellApp.exec_lines = ['%autoreload 2']
start_ipython(argv=[], user_ns={}, config=c)

它运作良好并打开我的iPython控制台，但离开ipython我可以键入退出或退出（）或按 ctrl + D 。

It works well and opens my iPython console, but to leave ipython I can just type exit or exit() or press ctrl+D.

我想要做的是添加退出挂钩或替换退出带有别的东西的命令。

What I want to do is to add an exit hook or replace that exit command with something else.

假设我有一个功能。

def teardown_my_shell():
    # things I want to happen when iPython exits

我如何注册当我退出或甚至如何让退出执行该功能时要执行的功能？

How do I register that function to be executed when I exit or even how to make exit to execute that function?

注意：我试图传递 user_ns = {'exit'：teardown_my_shell} 并且不起作用。

NOTE: I tried to pass user_ns={'exit': teardown_my_shell} and doesn't work.

谢谢。

推荐答案

首先感谢@ user2357112，我学习了如何创建扩展和注册一个钩子，但我发现 shutdown_hook 已被弃用。

First thanks to @user2357112, I learned how to create an extension and register a hook, but I figured out that shutdown_hookis deprecated.

正确的方法很简单。

import atexit

def teardown_my_shell():
    # things I want to happen when iPython exits

atexit.register(teardown_my_shell)

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