Handle clear output msg

[3coins]

Fixes #95

Sample code to test:

%pip install -q ipywidgets

from ipywidgets import Output
from IPython.display import display

out = Output()
display(out)

import time

with out:
    print("Hello!")

time.sleep(2)
out.clear_output(wait=True) # default is wait=False, which should clear the output immediately

time.sleep(2)
with out:
  print("Hello again!")

[3coins]

@ellisonbg
This change behaves similar to what I see on the JLab v4.4.3 without jupter-server-documents, but after reading the documentation for Output widget I am a bit confused if this is correct. In the example code above, since the display(out) was in the 2nd cell, shouldn't the statements in cell 3 cause an update on cell 2 output (where the output widget is displayed) rather than cell 3?

[dlqqq]

Cool! Never seen this before.

https://stackoverflow.com/questions/59661904/what-does-equal-do-in-f-strings-inside-the-expression-curly-brackets

[dlqqq]

@3coins Very cool, thanks! Tested this locally and it works well. Left some feedback on the code, but none of it is blocking since this works as-is. 👍

[3coins]

@dlqqq
Thanks for all the feedback, updated and resolved all of your comments.

[ellisonbg]

Have you tried a non-widgets example:

from IPython.display import clear_output
import time

for i in range(5):
    print(f"Iteration: {i}")
    time.sleep(1)
    clear_output(wait=True)
print("Loop finished")

[3coins]

@ellisonbg
Works the same way with non-widget example.

Screen.Recording.2025-06-13.at.9.46.36.AM.mov

[dlqqq]

Looks great, thank you!