what is unpacking & packing?

REFERENCES

• https://wikidocs.net/22801

• https://medium.com/@chrisjune_13837/python-%EA%B0%80%EB%B3%80%EC%9D%B8%EC%9E%90-%ED%8C%A8%ED%82%B9-%EC%96%B8%ED%8C%A8%ED%82%B9-a47ee2cdcac3

• https://dojang.io/mod/page/view.php?id=2345