修改或挂钩Jupyter的标签完成 [英] Modify or hook into Jupyter's tab completion

问题描述

我想知道是否可以修改Jupyter Lab或Notebook的制表符完整功能.例如，如果我键入"\ alpha"，然后按Tab键，则单元格中将显示UTF-8字符α".

I was wondering if there was a way to modify Jupyter Lab or Notebook's tab-complete functionality. For example, if I type "\alpha", and then press the tab key, I will get the UTF-8 character "α" in the cell.

有什么办法可以使自定义"[无空格的字符串]"制表符补全为某些特定的UTF-8字符或字符串?

Is there any way that I can do a custom "[string without spaces]" to tab-complete into some specific UTF-8 character or string?

例如"\ implies" +标签->⇒"

e.g. "\implies" + tab -> "⇒"

在我的编程生涯中，我可以看到很多用例，因此我想知道Jupyter(实验室或笔记本)是否提供了修改某些将字符串映射到选项卡式设置(或加载到文件中)的功能.输出.还是有一个不同的想法可以用来实现这一目标?

I can see a large number of use cases for this in my programming life, so I was wondering if Jupyter (Lab or Notebook) offered the ability to modify some settings (or load in a file) that maps strings to a tabbed output. Or is there a different idea that you could use to implement this?

谢谢！

推荐答案

Jupyter是基于IPython的，它是完成引擎-我们可以利用它.

Jupyter is (based on) IPython and it's completion engine - we can make use of it.

更新:您可以覆盖 latex_symbols 字典以获取所需的行为:

Update: you can override latex_symbols dict to get the behavior you want:

from IPython.core.latex_symbols import latex_symbols
latex_symbols['\\implies'] = '⇒'

您应该能够在此示例的基础上使它适用于所有字符.

You should be able to build upon this example to make it work with a whole range of characters.

初始答案/另一种解决方案:您可以使用IPython补全功能，尽管它不能完全按您的意愿工作:它不会替换文本，而只是附加一个特殊字符.这是一个示例:

Initial answer/another solution: you can hook into IPython completers, though it would not work exactly as you wish: it won't replace the text, but just append a special character. Here is an example:

from IPython import get_ipython

def implies_competer(ipython, event):
    return ['⇒']

ipython = get_ipython()
ipython.set_hook('complete_command', implies_competer, re_key='.*implies')

然后在您键入时(关键字后面的空格很重要):

Then when you type (the space after the keyword is important):

，然后按 tab ，您将获得:

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