def warning(message, **kwargs):
    kwargs["fg"] = kwargs.get("fg", "red")
    click.secho(u"warning: {}".format(message), **kwargs)
def test_impl():
            A = np.array([1., 2., 3.])
            A[0] = 4.0
            df = pd.DataFrame({'A': A})
            return df.A.var()