title: how to use get_user_info for Discord.py rewrite
body: <p>so, I have a command that works except the part where it needs to get the user ID here's the code: </p>
  
  <pre><code>from discord import abc
  from discord.ext import commands
  import asyncio
  class DMCog:
      def __init__(self, bot):
          self.bot = bot
      async def on_message(self, message):
          if message.guild is None:`
  
                  if message.content.startswith("!report"):
                  await message.channel.send("Who are you reporting? Input the ID only please.")
  
              def is_correct(m):
                  return m.author == message.author and m.content.isdigit()
  
              victim_ID = await self.bot.wait_for('message', check = is_correct)
              victim = await self.bot.get_user_info(victim_ID)
  
              if victim == None:
                  await message.channel.send("Can't find user, please try again")
                  return
              else:
                  success = (f"Found user: {victim.username} \n Is this correct? reply with Y or N. ")
                  await message.channel.send(success)
  </code></pre>
  
  <p>the error it outputs:</p>
  
  <pre><code>"discord.errors.HTTPException: BAD REQUEST (status code: 400): Invalid Form Body
  In user_id: Value "&lt;Message id=542780755034767380 pinned=False author=&lt;User id=197054540015599616 name='TheFutureKnight' discriminator='7664' bot=False&gt;&gt;" is not snowflake."
  </code></pre>