You can draw something and pass image to your code.
Usage:
from base64 import b64decode
from IPython.display import HTML, Image
from google.colab.output import eval_js
import urllib.request
board_html = urllib.request.urlopen('https://gist.githubusercontent.com/karim23657/5ad5e067c1684dbc76c93bd88bf6fa53/raw/2ef57f881bc700c2c346bd6c7a7f2d5364b21048/drawing%2520board.html').read().decode('utf-8')
def draw(filename='drawing.png'):
display(HTML(board_html))
data = eval_js('triggerImageToServer')
binary = b64decode(data.split(',')[1])
with open(filename, 'wb') as f:
f.write(binary)
display(Image('drawing.png'))
and Finally:
draw('myImage.png')
# or simply
draw()