Suppose you have the following TO-DO list:
to_do_list = ['Read an article', 'Outline the article', 'Implement an algorithm described in the article']
You want to pickle it and save the data to a separate to_do_list file with a protocol version of 5. Take a look at the code snippet below and detect which line is missing:
import pickle
file = open('to_do_list', 'wb')
...
file.close()
Write this missing line in the text field below.