Python bokeh.models 模块，Select() 实例源码

def update_plot(attr, old, new):
    # If the new Selection is 'female_literacy', update 'y' to female_literacy
    if new == 'female_literacy':
        source.data = {
            'x': fertility,
            'y': female_literacy
        }
    # Else, update 'y' to population
    else:
        source.data = {
            'x' : fertility,
            'y' : population
        }

# Create a dropdown Select widget: select