Discord API, get_member(user_id) errors
<p>I have this code and i am really curious about why it is not working. The problem is in <code>k = discord.Server.get_member(j)</code> it says</p>

<blockquote>
  <p>"TypeError: get_member() missing 1 required positional argument: 'user_id'".</p>
</blockquote>

<p>This code uses <a href="https://pypi.python.org/pypi/discord.py" rel="nofollow">discord.py</a>:</p>

<pre><code>@client.event
async def on_message(message):
if message.content.startswith('/sendpm'):
    print(message.author)
    j = message.content.replace('/sendpm ', '')
    print(j)
    j = j.replace('@', '')
    j = j.replace('&lt;', '')
    j = j.replace('&gt;', '')
    j = j.replace('!', '')
    print(l)
    k = discord.Server.get_member(j) #problem is here
    await client.send_message(await client.start_private_message(k), spammsg)
    await client.send_message(message.channel, 'sent' + message.author.mention)
</code></pre>