Mass Leave Discord Servers

leave.py

import discord

client = discord.Client()
token = "your-client-token"

whitelist = [
    # discord guild ids you don't want to leave
    123456789012345678,
    876543210987654321
]


@client.event
async def on_ready():
    for guild in client.guilds:
        try:
            if guild.id not in whitelist:
                server = client.get_guild(guild.id)
                await server.leave()
        except Exception as e:
            print(e)


client.run(token, bot=False)

For folks coming from Google, I made an updated version of the script that works: https://gist.github.com/SkyfallWasTaken/f35a11cd8c49efaa375b3b30b856c1a4