io_pickle.py

#-*-coding:utf-8-*-

import pickle

shoplistfile = 'shoplist.data'
shoplist = ['apple', 'mango', 'carrot']

f = open(shoplistfile, 'wb')
pickle.dump(shoplist, f)

f.close()

del shoplist

f = open(shoplistfile, 'rb')
storedlist = pickle.load(f)

print(storedlist)