def joinall(threads):
    for t in threads:
        t.join(300)
        assert not t.isAlive(), "Thread %s hung" % t
Subclasses can override this to add custom entity conversion code.
dataset/ETHPy150Open mongodb/mongo-python-driver/test/utils.py/joinall--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/tools/bulkloader.py/Loader.handle_entity