Jupyter

Misc

• Docs

• Kernel Menu Commands (navbar)

  • Interrupt: This command stops the processes that are currently running in a cell. This can be used, for example, to stop the training of a model, even if not all training epochs have been reached yet.
  • Restart & Run All: With this command, all cells can be executed again and the previous variables were deleted. This can be useful if you want to read a newer data set into the existing program.
  • Restart: The sole command “Restart” leads to the same result, but not all cells are executed again.
  • Reconnect: When training large models, the kernel can “die” because the memory is full. Then a reconnect makes sense.
  • Shutdown: As long as a kernel is still running, it also ties up memory. If you run other programs in parallel for which you want to free memory, the “Shutdown” command can make sense.

• Add HTML to markdown cells

  

• Limit Length of Cell Output

  • Right click output cell >> Click “Enable Scrolling for Outputs”

Shortcuts

• Preloaded

Description	Shortcut
shift + Enter	Run current cell and select the cell below
ctrl/cmd + Enter	Run current cell
alt/option + Enter	Run current cell and insert another cell below
ctrl/cmd + s	Save notebook
i, i	Interupt cell calculation
0, 0	Restart cell calculation

• Custom

  • Create/Edit

    1. Navbar >> Settings >> Advanced Settings Editor
    2. Click JSON Settings Editor (Top Right)
    3. CLick on User Preferences tab

  • Example

    

    {
        "command": "notebook:move-cell-up",
        "keys": [
            "Ctrl Shift ArrowUp"
        ],
        "selector": ".jp-Notebook:focus"
    },
    {
        "command": "notebook:move-cell-down",
        "keys": [
            "Ctrl Shift ArrowDown"
        ],
        "selector": ".jp-Notebook:focus"
    },

Operations

• First click inside cell >> Press Esc to enter Command mode (Cursor should stop blinking)

Insert/Delete Cells

• a - Insert new cell above current cell
• dd (press d twice) - Delete current cell
• b - Insert new cell below current cell

Change Cell Type

• m - Markdown mode (for writing comments and headers)
• y - Code mode

Select Multiple Cells

• While holding Shift + use the \(\uparrow\) or \(\downarrow\) to expand the selection