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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 getRandomPairwiseAlignment():
 """Gets a random pairwiseAlignment. """

    i, j, k, l = _getRandomSegment()
    m, n, o, p = _getRandomSegment()
    score = random.choice(xrange(-1000, 1000))
    return PairwiseAlignment(i, j, k, l, m, n, o, p, score, getRandomOperationList(abs(k - j), abs(o - n)))