botoleak.py

import gc
from threading import Thread
import boto3
import botocore


def client():
    boto3.Session().client("s3")


while True:
    threads = [Thread(target=client) for i in range(10)]

    def start(t):
        t.daemon = True
        t.start()
    map(start, threads)
    map(lambda t: t.join(), threads)

    # gc.collect()
    print len([o for o in gc.get_objects() if isinstance(o, botocore.client.BaseClient)])