discord python send private message

1@client.command(pass_context=True)
2async def dm(ctx):
3    user=await client.get_user_info("User's ID here")
4    await client.send_message(user, "Your message goes here")
5    # This works ^

1import discord
2
3client = discord.Client()
4
5@client.event
6async def on_ready():
7    print('We have logged in as {0.user}'.format(client))
8
9@client.event
10async def on_message(message):
11    if message.author == client.user:
12        return
13
14    if message.content.startswith('$hello'):
15        await message.channel.send('Hello!')
16
17client.run('your token here')