如何在IPython Notebook命令模式下选中全部单元格？

I totally feel your pain—hitting Cmd+A and only getting text highlighted instead of selecting all cells is such a hassle when you need to run Find & Replace across your entire notebook. Let’s break down the solutions, starting with native (no-plugin) methods that should solve your problem right away:

Native, No-Plugin Fixes #

These are built directly into Jupyter, so you don’t need to install anything:

• Keyboard Shortcut (Mac): First, switch to Command Mode by pressing Esc (you’ll know you’re there when cells have a gray/blue outer border instead of a blue text input border). Then press Shift + Cmd + A—this will select every cell in the notebook. Now your Find & Replace tool will work across all selected cells.
• Menu Bar Click: If shortcuts aren’t your thing, go to the top menu bar → Edit → Select All Cells. This does exactly the same thing as the shortcut, just with a click.

Plugin Option (For Extra Selection Power) #

If you want more advanced cell selection features (like selecting cells by type, saving selection presets, or bulk editing), the jupyter-contrib-nbextensions package is a game-changer. It’s a curated set of extensions for Jupyter:

1. Install the package using pip:

   pip install jupyter-contrib-nbextensions
   

2. Enable the extensions in your local Jupyter setup:

   jupyter contrib nbextension install --user
   

3. Open your notebook, and you’ll see a new Nbextensions tab in the top right corner. From there, you can enable extensions like "Select Multiple Cells" (which adds intuitive multi-cell selection controls) or "Cell Tags" (if you want to group and select cells by custom tags later).

Pro tip: Always confirm you’re in Command Mode before trying to select cells—if a cell is in Edit Mode (you’re typing inside it), shortcuts will target text instead of the cell itself.

内容的提问来源于stack exchange，提问作者Luke Davis