snippet23.py

# create some control elements
int_slider = widgets.IntSlider(value=1, min=0, max=10, step=1, description='freq')
color_picker = widgets.ColorPicker(value=initial_color, description='pick a color')
text_xlabel = widgets.Text(value='', description='xlabel', continuous_update=False)
text_ylabel = widgets.Text(value='', description='ylabel', continuous_update=False)
 
# callback functions
def update(change):
    """redraw line (update plot)"""
    line.set_ydata(np.sin(change.new * x))
    fig.canvas.draw()
     
def line_color(change):
    """set line color"""
    line.set_color(change.new)
     
def update_xlabel(change):
    ax.set_xlabel(change.new)
     
def update_ylabel(change):
    ax.set_ylabel(change.new)
 
# connect callbacks and traits
int_slider.observe(update, 'value')
color_picker.observe(line_color, 'value')
text_xlabel.observe(update_xlabel, 'value')
text_ylabel.observe(update_ylabel, 'value')
 
text_xlabel.value = 'x'
text_ylabel.value = 'y'