How does python determine whether a set contains all items in another set?

This article describes how to determine whether a collection contains all the items in another collection in python, and related skills related to Python set operations, for more information about how to determine whether a collection contains all the items in another collection, see the example in this article. Share it with you for your reference. The details are as follows:

>>> L1 = [1, 2, 3, 3] >>> L2 = [1, 2, 3, 4] >>> set (L1 ). difference (L2) set ([]) >>> set (L2 ). difference (L1) set ([4])

I hope this article will help you with Python programming.