检查物品的库存

Question

我一直在研究一个名为“游戏”的命令，但是对于这个命令，您的物品栏中需要一台平板电脑。总结一下，我的问题是：你如何让机器人检查物品（平板电脑）是否在你的库存中？ 过去 3 小时我一直在努力解决这个问题，我曾多次尝试更改代码，例如将 JSON 文件更改为具有额外的独特稀有度，并检查该稀有度是否存在该项目，但这也没有任何效果。我没有错误，但也没有成功，当我运行命令没有任何反应，没有错误，服务器没有任何反应。如有任何帮助，我们将不胜感激！

命令：

@client.command()
async def game(ctx):

    await open_account(ctx.author)
    user = ctx.author
    users = await get_bank_data()

    try:
        bag = users[str(user.id)]["bag"]
    except:
        bag = []

    if bag.contains("tablet"):
        await ctx.send("More coding. . .")
    else:
        await ctx.send("Buy a tablet!")

JSON 文件：

{"703287162640007278": {"wallet": 431, "bank": 534404, "bag": [{"item": "milk", "amount": 2}, {"item": "Golden Coin", "amount": 1}, {"item": "alarm", "amount": 1}, {"item": "tablet", "amount": 1}, {"item": "pistol", "amount": 1}]}

Answer 1

如果我理解正确，bag 是字典列表，即您已经访问了 JSON 文件中的键 'bag'：

"bag": [{"item": "milk", "amount": 2}, {"item": "Golden Coin", "amount": 1}, {"item": "alarm", "amount": 1}, {"item": "tablet", "amount": 1}, {"item": "pistol", "amount": 1}]

您需要检查这些字典中是否有键 item 和值 tablet。所以：

if any(element['item'] == 'tablet' for element in bag):

编辑：尝试这样的事情：

bag = users[str(user.id)].get("bag")
print(bag)

# it should print the bag or None
# [{"item": "milk", "amount": 2}, {"item": "Golden Coin", "amount": 1},
# {"item": "alarm", "amount": 1}, {"item": "tablet", "amount": 1}, 
#  {"item": "pistol", "amount": 1}]

if bag:
    if any(element['item'] == 'tablet' and element['amount'] > 0
           for element in bag):
        # do something if tablet in bag
    else:
        # no tablet in bag
else:
    # do something is there is no bag

演示：

bag = [{"item": "milk", "amount": 2}, {"item": "Golden Coin", "amount": 1},
       {"item": "alarm", "amount": 1}, {"item": "tablet", "amount": 1}, 
       {"item": "pistol", "amount": 1}]

if bag:
    if any(element['item'] == 'tablet' and element['amount'] > 0
           for element in bag):
        print('tablet found')
    else:
        print('no tablet in the bag')
else:
    print('no bag')

输出：

tablet found

检查物品的库存

Check inventory for item

python

python-3.x

discord.py

discord.py-rewrite