Interactive plots: Access to current cell output (CURRENT_HTML_OUTPUT_ELEMENT) from python possible?

[jeffreyfq]

Hi,

I figured out that it is indeed possible to include interactive matplotlib plots,
I do it like this:

from matplotlib.backends.html5_canvas_backend import FigureCanvasHTMLCanvas
from matplotlib.backends.html5_canvas_backend import FigureCanvasWasm
import pyodide
from js import document, window

resultelement = document.createElement("div");
def create_root_element(self=None):
  el = document.createElement("div");
  resultelement.appendChild(el)
  return el

# this has no effect, I change the method for each canvas down below...  
FigureCanvasWasm.create_root_element=create_root_element

# plot figure as usual
plt.figure()
plt.scatter(... plot something)
plt.title("data")
matplotlib.pyplot.gcf().canvas.create_root_element=create_root_element
cv = matplotlib.pyplot.gcf().canvas
cv.draw()
cv.show()

#... even multiple plots possible, all collected in div resultelement

# this is necessary to show the figures created and collected in this div...
resultelement

I just have two problems:

1. The interactive figure controls are shown, but not the data (plot is white), I need to click on it to force a refresh of the plot.
   Question: What would be the best option to enforce a refresh of the interactive plot after/while cell is/was executed?

2. I have to put resultelement at the end of the cell, it is ok, but it would be nice if I could attach the div resultelement manually in the function create_root_element or similar.
   Question: Is there a way to attach a div to the results of the cell without returning the object in the last line of the cell. Internally the global variable CURRENT_HTML_OUTPUT_ELEMENT is used for this, can I access this somehow from the python code? Can I access the current cell ID from python somehow?