简单建立一个银行系统

创建你的钱包

• 一样，对比前面的match档，现在新增一个bank的json档案

• 回到bot档，现在我们必须撰写2个部分，一个是读取，一个是确认你的这个key是否存在......

# cogs/includebanksystem.py
async def open_account(user):
    pass

# 省略

async def get_bank_data():
    pass

• 前者必须确认key，後者只须要做read的这个部分即可

async def open_account(user):
    users = await get_bank_data()
    if str(user.id) in users:
        return False
    else:
        # 省略
    with open("bank.json", "w") as f:
        json.dump(users, f)
        
    return True

async def get_bank_data():
    with open("bank.json", "r")as f:            
        users = json.load(f)
    return users

• 回到我们刚才省略的部分，原始资料一律用0

users[str(user.id)] = {}
users[str(user.id)]["wallet"] = 0
users[str(user.id)]["bank"] = 0

• bank档

{

}

显示出你的钱包

• 一样，先打开你的json，然後依照栏位做处理

# 略
@commands.command()
async def money(self, ctx):
    await open_account(ctx.author)
    user = ctx.author
    users = await get_bank_data()
    wallet = users[str(user.id)]["wallet"]
    bank = users[str(user.id)]["bank"]

• 将资料拿出来後，使用先前的方法，做元素添加
• 这边比较不一样的是，user.avatar_url(这个东西就是自己的头像 XD

em = discord.Embed(title = f"{ctx.author.name}'s 钱包", color = discord.Color.red())
em.set_thumbnail(url = user.avatar_url)
em.add_field(name = "Wallet", value = wallet)
em.add_field(name = "Bank", value = bank)
await ctx.send(embed = em)

• 示意图
  

货物上架

• 在bot最上放以json的格式，输入你想要的货物

# 略
shop = [
            {"name": "Watch", "price": 8},
            {"name": "Laptop", "price": 87},
            {"name": "PC", "price": 870},
            {"name": "PS5", "price": 690},
            {"name": "Cat", "price": 1000}
        ]

• 回到下方，写出函式

@commands.command()
async def market(self, ctx):
        pass

• 利用for......in......回圈

em = discord.Embed(title = "market", color = 0x6345)
em.set_thumbnail(url = "https://www.formula-ai.com/wp-content/uploads/2020/09/python_or_java_meme.jpg")
    
for item in shop:
    name = item["name"]
    price = item["price"]
    em.add_field(name = name, value = f"${price}")
await ctx.send(embed = em)

• 示意图