######################Problem 4###########################

def comb_nest(*x):
    """prec: x is a stargument; you pass in a comma separated
    list of lists.  
    postc:  returns a list containing the sum of each of 
    the nested lists inside of x.  
    """
    out = []
    for k in x:
        summ = sum(k)
        out.append(summ)
    return out
def comb_list(*x):
    return [sum(k) for k in x]
def main():
    print("*************** Problem 4 Tests **************")
    print(comb_nest([1,2,3], [7, 8], [10,3,2]) == [6, 15, 15])
main()