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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 print_MannWhitneyU(div_calc):
 """ Compute the Mann-Whitney U test for unequal group sample sizes. """

    try:
        x = div_calc.values()[0].values()
        y = div_calc.values()[1].values()
    except:
        return "Error setting up input arrays for Mann-Whitney U Test. Skipping "\
               "significance testing."
    T, p = stats.mannwhitneyu(x, y)
    print "\nMann-Whitney U test statistic:", T
    print "Two-tailed p-value: {}".format(2 * p)