JupyterLab 4 - iterating over all cells in a notebook

JupyterLab
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2

Hello Tony,

I am currently working on a project doing something similar where I iterate over the entire notebooks cells to check for a certain key on the cells metadata.

Firstly I am importing LabShell and NotebookPanel
Then inside my plugin I do:

const labShell = app.shell as LabShell;
labShell.currentChanged.connect(() => {
  const notebook = app.shell.currentWidget as NotebookPanel;
  const cellList = notebook.content.model.cells;

  for (const cell of cellList) {
    console.log('METADATA: ', cell.metadata)
  }
});

The LabShell part is to detect when users switch between notebooks or open a new notebook.

Hopefully this is enough to get you started. If you have any questions please let me know.

– Luke