from IPython.display import display
import ipywidgets as W
from traitlets import link

def coreCalculationFunction(myOptions):
    return myOptions

def optionsRelatedFunction():
    myOptions=['a', 'b', 'c']
    label = W.HTML(value="Hello World")
    the_interact = W.interactive(coreCalculationFunction,
                 myOptions=myOptions)
    dropdown = the_interact.children[0]
    
    # link ensures that when dropdown.value changes,
    # label.value gets the same value, and vice versa.
    # dlink is a unidirectional alternative.
    link((dropdown, 'value'),
         (label, 'value'),
    )
    display(label, the_interact)