Sorting a dictionary

dict_02_sort.py

"""
Sorting a dictionary to an Iterable of tuples.
https://en.wikipedia.org/wiki/List_of_countries_and_dependencies_by_area
"""

countries: dict = {
    "Taiwan": 36193,
    "Canada": 9984670,
    "United States": 9525067,
    "Russia": 17098246,
    "Argentina": 2780400,
    "Zambia": 752612,
    "China": 9596961,
}

assert sorted(countries.items(), key=lambda kv: kv[1], reverse=False) == [
    ("Taiwan", 36193),
    ("Zambia", 752612),
    ("Argentina", 2780400),
    ("United States", 9525067),
    ("China", 9596961),
    ("Canada", 9984670),
    ("Russia", 17098246),
]

assert sorted(countries.items(), key=lambda kv: kv[1], reverse=True) == [
    ("Russia", 17098246),
    ("Canada", 9984670),
    ("China", 9596961),
    ("United States", 9525067),
    ("Argentina", 2780400),
    ("Zambia", 752612),
    ("Taiwan", 36193),
]

assert sorted(countries.items(), key=lambda kv: kv[0], reverse=False) == [
    ("Argentina", 2780400),
    ("Canada", 9984670),
    ("China", 9596961),
    ("Russia", 17098246),
    ("Taiwan", 36193),
    ("United States", 9525067),
    ("Zambia", 752612),
]

assert sorted(countries.items(), key=lambda kv: kv[0], reverse=True) == [
    ("Zambia", 752612),
    ("United States", 9525067),
    ("Taiwan", 36193),
    ("Russia", 17098246),
    ("China", 9596961),
    ("Canada", 9984670),
    ("Argentina", 2780400),
]