Wall crack recommended! Several Jupyter Notebook super practical plug-ins (2)

This issue is the second issue of the Jupyter Notebook practical plug-in series. I will introduce to you another 5 very practical extension plug-ins. I hope it will be helpful to you.

##Tool installation

Direct pip Installation:

pip install jupyter_contrib_nbextensions && jupyter contrib nbextension install

Execute the above statement, restart jupyter notebook, if the following options appear, the installation is successful.

Open the Nbextensions tab to view jupyter notebook Currently supported plug-ins:

##1 . Toggle all line numbers

##Display all line numbers

Add toolbar button and hotkey to toggle row numbers for all cells:

## Tips: can also be passed L Shortcut keys directly operate .

##2. Collapsible headings

Title folding

This plugin allows us to

By titleCollapse the relevant content:

##3. Hide input

# Hide code

Hide the input of the selected code cell:

4. 输出多个变量

加载下面两行代码即可（非插件）：

from IPython.core.interactiveshell import InteractiveShell
InteractiveShell.ast_node_interactivity = "all"

效果：

5. Variable Inspector

变量检查器

变量检查器扩展收集所有已定义的变量，并在浮动窗口中显示它们。扩展可以拖动，可以调整大小，也可以折叠：

未完待续..

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