title: AttributeError: 'Bot' object has no attribute 'add_roles'
body: <p>I am writing a bot for discord in Python. I want that when someone logged in to the server, he was given a certain role</p>
  
  <pre><code>import discord
  from discord.ext import commands
  from discord.ext.commands import bot
  bot = commands.Bot(command_prefix='!')
  from discord.utils import get
  
  @bot.event
  async def on_member_join(member):
      role = get(member.roles, name="Игроки")
      await bot.add_roles(member, role)
  </code></pre>
  
  <p>When I start and someone enters the server, I get the following error:
  AttributeError: 'Bot' object has no attribute 'add_roles'</p>