def remove_operation(feed, activities, trim=True, batch_interface=None):
    t = timer()
    msg_format = 'running %s.remove_many operation for %s activities batch interface %s'
    logger.debug(msg_format, feed, len(activities), batch_interface)
    feed.remove_many(activities, trim=trim, batch_interface=batch_interface)
    logger.debug('remove many operation took %s seconds', t.next())
Ax = b => x
dataset/ETHPy150Open tschellenbach/Stream-Framework/stream_framework/feed_managers/base.py/remove_operation--crossover with--dataset/ETHPy150Open fredrik-johansson/mpmath/mpmath/matrices/linalg.py/LinearAlgebraMethods.lu_solve