遍历列表删除值

Question

我正在编写一个python代码，以基本上过滤掉具有最低值的项。这段代码应该可以工作，但一些奇怪的事情正在发生，例如，项目1中的一些内容正在被删除，而项目2中的一些内容正在被删除。任何帮助都将不胜感激。这个问题是重复的，答案可以在这里看到

items=[['Yellow Goblin Egg', 25000], ['Yellow Goblin Egg', 46000], ['Yellow Goblin Egg', 46000], ['Yellow Goblin Egg', 46000], ['Yellow Goblin Egg', 46000], ['Yellow Goblin Egg', 46000], ['Yellow Goblin Egg', 46000], ['Yellow Goblin Egg', 50000], ['Yellow Goblin Egg', 58000], ['Yellow Goblin Egg', 59000], ['Yellow Goblin Egg', 60000], ['Yellow Goblin Egg', 60000], ['Yellow Goblin Egg', 70000], ['Yellow Goblin Egg', 70000], ['Yellow Goblin Egg', 72000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 73000], ['Yellow Goblin Egg', 74000], ['Yellow Goblin Egg', 75000], ['Yellow Goblin Egg', 80000], ['Yellow Goblin Egg', 130000], ['Yellow Goblin Egg', 200000], ['Yellow Repelling Candle', 1300000], ['Yellow Repelling Candle', 1500000], ['Forceful Yellow Crab Hat of Celebration', 14999999], ['Hurtful Yellow Crab Hat of Celebration', 15000000], ['Bloody Yellow Crab Hat of Celebration', 15000000], ['Yellow Crab Hat of Celebration', 15000000], ['Itchy Yellow Crab Hat of Celebration', 16600000], ['Itchy Yellow Crab Hat of Celebration', 16800000], ['Bloody Yellow Crab Hat of Celebration', 17777777], ['Yellow Crab Hat of Celebration', 18000000], ['Yellow Crab Hat of Celebration', 18990000], ['Yellow Crab Hat of Celebration', 19000000], ['Itchy Yellow Crab Hat of Celebration', 20000000], ['Shaded Yellow Crab Hat of Celebration', 20444000], ['Shaded Yellow Crab Hat of Celebration', 25000000], ['Itchy Yellow Crab Hat of Celebration', 30000000], ['Yellow Crab Hat of Celebration', 30000000], ['Yellow Goblin Egg', 40000000], ['Neon Yellow Sheep Skin', 42000000], ['Neon Yellow Sheep Skin', 43000000], ['Neon Yellow Sheep Skin', 44000000], ['Neon Yellow Sheep Skin', 58000000], ['Neon Yellow Sheep Skin', 59700000], ['Unpleasant Yellow Crab Hat of Celebration', 75000000]]
    items2 = items
    for y in items2:
        for z in items2:
            if y[0] == z[0] and y[1] >= z[1]:
                print(y, y[1],z,z[1])
                items.remove(y)
                break
            continue
    print("/n")
    print(items2)
    print(items)

Answer 1

items2 = items不创建列表的副本，只创建对列表的引用。您可能想使用items2 = items[:]