Discord.py生成token时重复输出历史token是什么原因？

你定义的tkn是全局作用域的列表，每次调用createtoken命令执行tkn.append(tok)操作时，都会把新生成的token追加到全局列表中，后续使用'\n'.join(tkn)拼接输出内容时，自然会携带所有历史生成过的token。

可根据需求选择对应优化方式：

• 若每次调用命令仅生成1个token（你当前代码中循环次数固定为1），可直接省略列表变量，直接使用当前生成的token输出
• 若后续可能调整为批量生成多个token，可将tkn列表移到createtoken函数内部，每次调用命令时重新初始化空列表，避免历史数据残留

修改后代码示例（适配单token生成场景，最简化） #

import random # 若你原代码已导入random可忽略此行
tokenOpts = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890".lower()

def GenToken():
    t1 = ''.join((random.choice(tokenOpts)) for x in range(5))
    t2 = ''.join((random.choice(tokenOpts)) for x in range(3))
    t3 = ''.join((random.choice(tokenOpts)) for x in range(7))
    t4 = ''.join((random.choice(tokenOpts)) for x in range(5))
    return f"{t1}-{t2}-{t3}-{t4}"

@bot.command()
async def createtoken(ctx, planDays=0):
    if ctx.message.author.id in config.OWNERS:
        with open(path, "r") as data: 
            tokens = json.load(data)
        with open(path, "w") as output:
            tok = GenToken()
            tokens[0]['Unused'].append({"Days": planDays, "Level": "None", "Token": str(tok)})
            output.write(json.dumps(tokens, sort_keys=False, indent=4))
            embed = discord.Embed(
                title="Verification",
                color= discord.Color.dark_theme()
            )
            embed.add_field(name="Token Status: Created <:white_check_mark:886940376127131689>", value=f"Token: `{tok}`")
            embed.set_footer(text="YoursTruly.exe")
            await ctx.send(embed=embed)

修改后代码示例（适配后续可能批量生成的场景） #

import random # 若你原代码已导入random可忽略此行
tokenOpts = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890".lower()

def GenToken():
    t1 = ''.join((random.choice(tokenOpts)) for x in range(5))
    t2 = ''.join((random.choice(tokenOpts)) for x in range(3))
    t3 = ''.join((random.choice(tokenOpts)) for x in range(7))
    t4 = ''.join((random.choice(tokenOpts)) for x in range(5))
    return f"{t1}-{t2}-{t3}-{t4}"

@bot.command()
async def createtoken(ctx, planDays=0, generate_count=1): # 可自定义传入生成token的数量
    if ctx.message.author.id in config.OWNERS:
        tkn = [] # 每次调用命令初始化空列表，清除历史数据
        with open(path, "r") as data: 
            tokens = json.load(data)
        with open(path, "w") as output:
            for i in range(generate_count): 
                tok = GenToken()
                tkn.append(tok)
                tokens[0]['Unused'].append({"Days": planDays, "Level": "None", "Token": str(tok)})
            output.write(json.dumps(tokens, sort_keys=False, indent=4))
            o = '\n'.join(tkn)
            embed = discord.Embed(
                title="Verification",
                color= discord.Color.dark_theme()
            )
            embed.add_field(name="Token Status: Created <:white_check_mark:886940376127131689>", value=f"Token: `{o}`")
            embed.set_footer(text="YoursTruly.exe")
            await ctx.send(embed=embed)

内容的提问来源于stack exchange，提问作者UnknownKachal