Is it possible to add MS Excel-like mini chart in dash datatable?

Dash Python
2

That is true. Your best bet for now would be:

  1. Use html.Table which can have any components as children
  2. Display your graphs above the dash_table.DataTable columns
  3. Use sparklines Sparklines as Fonts! Embedding Minimal Sparklines in Tables & Components
  4. Check out the conditional formatting options for heatmaps embedded in cells: Conditional Formatting | Dash for Python Documentation | Plotly