Using an IPython kernel with cloudpickle for a clean testing namespace

pickledepickle.py

try:
    from queue import Empty  # Python 3
except ImportError:
    from Queue import Empty  # Python 2

import cloudpickle
import IPython
    
def remote_pickledepickle(obj):
    km, client = IPython.kernel.manager.start_new_kernel()
    client.execute("import pickle")
    client.execute("import cloudpickle")
    dump_id = client.execute("cloudpickle.dumps(pickle.loads({}))".format(cloudpickle.dumps(obj)))
    
    winner = None
    
    try:
        while(True):
            message = client.get_iopub_msg(timeout=0.1)
            if(message['msg_type'] == 'execute_result' and message['parent_header']['msg_id'] == dump_id):
                winner = message['content']['data']['text/plain']
                
    except Empty:
        pass
    km.shutdown_kernel(now=True)
    return eval(winner)