title: Discord Bot Python add_roles
body: <p>im trying to make a discord bot which gives you a "Member" role when you type !join.
  Im having problems with add_roles.</p>
  
  <pre><code>from discord.ext import commands
  import os
  from webserver import keep_alive
  
  bot = commands.Bot(command_prefix = "!")
  bot.remove_command('help')
  
  @bot.event
  async def on_member_join(member):
      role = discord.utils.get(member.guild.roles, name="OG")
      await member.add_roles(role)
  
  @bot.event
  async def on_ready():
    print("yeay eyea")
  
  
  @bot.command(pass_context=True)
  async def join(ctx):
    member = ctx.message.author
    role = discord.utils.get(member.guild.roles, name="Member")
    await bot.add_roles(member, role)
  
  
  
  keep_alive()
  TOKEN = os.environ.get("NjQwMTQaaaaaaaaaaaaaaaaaaaA4qHkx3Tl-l3CbpX8kTICfA")
  bot.run("NaaaaaaaaaaaaaTICfA")
  </code></pre>
  
  <p>this is the error i get when i try to use the command "!join":</p>
  
  <pre><code>Ignoring exception in command join:Traceback (most recent call last):
    File "/home/runner/.local/share/virtualenvs/python3/lib/python3.7/site-packages/discord/ext
  /commands/core.py", line 79, in wrapped    ret = await coro(*args, **kwargs)
    File "main.py", line 23, in join
      await bot.add_roles(member, role)AttributeError: 'Bot' object has no attribute 'add_roles'
  
  The above exception was the direct cause of the following exception:
  Traceback (most recent call last):
    File "/home/runner/.local/share/virtualenvs/python3/lib/python3.7/site-packages/discord/ext/commands/bot.py", line 863, in invoke
      await ctx.command.invoke(ctx)
    File "/home/runner/.local/share/virtualenvs/python3/lib/python3.7/site-packages/discord/ext/commands/core.py", line 728, in invoke
      await injected(*ctx.args, **ctx.kwargs)
    File "/home/runner/.local/share/virtualenvs/python3/lib/python3.7/site-packages/discord/ext/commands/core.py", line 88, in wrapped
      raise CommandInvokeError(exc) from exc
  discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError:'Bot' object has no attribute 'add_roles'
  </code></pre>
  
  <p>add_roles does not exist?</p>