目前我的Discord机器人的”pi”命令存在问题。

huangapple
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英文:

There is currently a problem with my discord bot's pi command

问题

我有一个 Discord 的 Python 机器人，并且我制作了一个类似这样的命令：命令：?pi 100 响应：The value of pi to 100 decimal places is: 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679

这是我的代码：

  1. import decimal
  2. import discord
  3. from discord.ext import commands
  4. from discord.ext.commands import has_permissions, MissingPermissions
  6. #token
  7. token = "hidden"
  9. #intents and prefix
  10. intents = discord.Intents.default()
  11. bot = commands.Bot(command_prefix="?", intents=intents)
  13. #basic events
  14. @bot.event
  15. async def on_ready():
  16.   print('We have logged in as {0.user}'.format(bot))
  18. @bot.event
  19. async def on_message(message):
  20.   if message.author == bot.user:
  21.     return
  22.   await bot.process_commands(message)
  24. #fun commands
  25. @bot.command()
  26. async def pi(ctx, num_decimals: int):
  27.   if num_decimals > 10000:
  28.     await ctx.send("Sorry, I can only print up to 10000 decimal places.")
  29.     return
  30.   decimal.getcontext().prec = num_decimals + 1
  31.   pi_value = decimal.Decimal(0)
  32.   for i in range(num_decimals + 1):
  33.     pi_value += (decimal.Decimal(1) / 16 ** i) * ((decimal.Decimal(4) / (8 * i + 1)) - (decimal.Decimal(2) / (8 * i + 4)) - (decimal.Decimal(1) / (8 * i + 5)) - (decimal.Decimal(1) / (8 * i + 6)))
  34.   pi_str = str(pi_value)[:num_decimals + 2]  # Fix: changed to num_decimals + 2
  35.   await ctx.send(f"The value of pi to {num_decimals} decimal places is: {pi_str}")
  38. try:
  39.   bot.run(token)
  40. except discord.HTTPException as e:
  41.   if e.status == 429:
  42.     print("The Discord servers denied the connection for making too many requests")
  43.   else:
  44.     raise e
英文:

I have a discord python bot and I made a command like this: command: ?pi 100 response: The value of pi to 100 decimal places is: 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679

Here is my code:

  1. import decimal
  2. import discord
  3. from discord.ext import commands
  4. from discord.ext.commands import has_permissions, MissingPermissions
  6. #token
  7. token = "hidden"
  9. #intents and prefix
  10. intents = discord.Intents.default()
  11. bot = commands.Bot(command_prefix="?", intents=intents)
  13. #basic events
  14. @bot.event
  15. async def on_ready():
  16.   print('We have logged in as {0.user}'.format(bot))
  18. @bot.event
  19. async def on_message(message):
  20.   if message.author == bot.user:
  21.     return
  22.   await bot.process_commands(message)
  24. #fun commands
  25. @bot.command()
  26. async def pi(ctx, num_decimals: int):
  27.   if num_decimals > 10000:
  28.     await ctx.send("Sorry, I can only print up to 10000 decimal places.")
  29.     return
  30.   decimal.getcontext().prec = num_decimals + 1
  31.   pi_value = decimal.Decimal(0)
  32.   for i in range(num_decimals + 1):
  33.     pi_value += (decimal.Decimal(1) / 16 ** i) * ((decimal.Decimal(4) / (8 * i + 1)) - (decimal.Decimal(2) / (8 * i + 4)) - (decimal.Decimal(1) / (8 * i + 5)) - (decimal.Decimal(1) / (8 * i + 6)))
  34.   pi_str = str(pi_value)[:num_decimals + 1]
  35.   await ctx.send(f"The value of pi to {num_decimals} decimal places is: {pi_str}")
  38. try:
  39.   bot.run(token)
  40. except discord.HTTPException as e:
  41.   if e.status == 429:
  42.     print("The Discord servers denied the connection for making too many requests")
  43.   else:
  44.     raise e

The bot works perfectly but the only problem is that, when I type ?pi 100, it only responds with The value of pi to 100 decimal places is: 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067. And the problem is, that is only 99 digits, not 100. Is there a way I can fix it? Any help will be appreciated.

答案1

得分: 1

  1. 你可以通过利用 mpmath 库来解决这个问题，使你的代码更简洁：
  3. ```python
  4. from mpmath import mp
  6. @bot.command()
  7. async def pi(ctx, num_decimals: int):
  8.   if num_decimals > 10000:
  9.     await ctx.send("抱歉，我只能显示最多10000位小数。")
  10.   else:
  11.     mp.dps = num_decimals + 1  # 设置小数位数；我们加一是因为第一位不是小数
  12.     await ctx.send(f"π的值，精确到小数点后{num_decimals}位，为：{mp.pi}")
英文:

You can solve this and make your code much shorter by taking advantage of the mpmath library like so:

  1. from mpmath import mp
  3. @bot.command()
  4. async def pi(ctx, num_decimals: int):
  5.   if num_decimals > 10000:
  6.     await ctx.send("Sorry, I can only print up to 10000 decimal places.")
  7.   else:
  8.     mp.dps = num_decimals + 1  # set number of digits; We are adding one beause the first number is not a decimal
  9.     await ctx.send(f"The value of pi to {num_decimals} decimal places is: {mp.pi}")

Note that I'm almost certain that discord only allows the maximum of 2,000 characters per message so the send will fail if you request too many digits

huangapple
  • 本文由 发表于 2023年3月9日 21:18:16
  • 转载请务必保留本文链接：https://go.coder-hub.com/75685149.html
  • discord
  • discord.py
  • pi
  • python
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