code: def getRandomPairwiseAlignment():
      
      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)))
docs: Gets a random pairwiseAlignment.