Store and retrieve objects in memory with joblib
from tempfile import mkdtemp
savedir = mkdtemp()
import os
filename = os.path.join(savedir, 'test.pkl')
import numpy as np
to_persist = [('a', [1, 2, 3]), ('b', np.arange(10))]
import joblib
joblib.dump(to_persist, filename)
joblib.load(filename)