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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_fake_data(*a):
 """ Called whenever someone presses the "fire" button. """

    # add columns of data to the databox
    d['x'] = _n.linspace(0,10,100)
    d['y'] = _n.cos(d['x']) + 0.1*_n.random.rand(100)
    
    # update the curve    
    c.setData(d['x'], d['y'])