Discord PY On member Join add Roles

Question

I am a bit new to Discord PY and am looking for a way to add roles if a person DM's a Key to the bot. I researched and typed this code but am getting errors please Help The Code IS

Mod = 789737793042776074


@Client.event
async def on_member_join(person):
    async for guild in Client.fetch_guilds(limit=150):
        channel = person
        await channel.send(f"Thanks for Joining {guild.name}")
        reply = await Client.wait_for('message', timeout=60)
        if reply.content == 'STron':
#         role = get(guild.roles, id = Mod)
          await channel.send('Sshh I Gave you Moderator')
          await person.add_roles(id = Mod)

I am getting an error

Ignoring exception in on_member_join
Traceback (most recent call last):
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/client.py", line 333, in _run_event
    await coro(*args, **kwargs)
  File "main.py", line 28, in on_member_join
    await person.add_roles(id = Mod)
TypeError: add_roles() got an unexpected keyword argument 'id'

Answer 1

@client.event
async def on_member_join(user):
    await user.send(f"Message and variables")
    await user.add_roles(id) ##or await user.add_roles(ctx.guild.get_role(Name or Id))

Answer 2

async def on_member_join(member): 
  role = discord.utils.get(member.guild.roles, name="Role name here")
  await member.add_roles(role)

This should help. Try and read the docs or research discord.utils.get