问题
Kind of silly but, is there a shortcut key to change a code cell to markdown cell. To place a markdown cell, I have to insert a cell, then go to the toolbar menu(below the main menu bar) and then select markdown instead of code.
回答1:
Press M whilst in command mode (highlight around the selected cell should be blue, not green), use Esc to switch to command mode and Enter to switch back to edit mode.
So, if you're editing a cell, the key presses to change the cell to a markdown cell are Esc, M, Enter.
You can look up all the Jupyter notebook keyboard commands by pressing the keyboard icon in the toolbar. You can also edit your keyboard shortcuts by going to Help > Edit Keyboard Shortcuts
回答2:
Navigate to the required cell and press the Esc key on your keyboard followed by the M key
来源：https://stackoverflow.com/questions/47787721/shortcut-key-for-changing-code-cell-to-markdown-cell-in-jupyter-notebook