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import ipywidgets as widgets
from ipywidgets import interact, fixed
w1 = widgets.Checkbox(value=False, description='Widget 1')
w2 = widgets.Checkbox(value=False, description='Widget 2')
w3 = widgets.Checkbox(value=False, description='Widget 3')
def test(**kwargs):
x = kwargs.pop('val')
if all(kwargs.values()):
print(x)
# do something
interact(test, val = fixed(3), w1=w1, w2=w2, w3=w3);