3.8.3. Looping through a dictionary’s entries

Similarly to lists, we can loop through every element of a dictionary using the for instruction. The variable returned by for is the key. For example, to loop over every keys of this dictionary:

dict_of_anything = {
    1: "String for integer key 1",
    2: "String for integer key 2",
    "three": "String for string key 'three'",
    "some_int_value": 10,
    "some_float_value": 10.0,
    "some_list": [1, 3, 5, 7],
    "some_nested_dict": {
        "a": "A",
        "b": "B",
    },
}

we would do:

for key in dict_of_anything:
    print(f"Key {key} contains this value: {dict_of_anything[key]}")

Key 1 contains this value: String for integer key 1
Key 2 contains this value: String for integer key 2
Key three contains this value: String for string key 'three'
Key some_int_value contains this value: 10
Key some_float_value contains this value: 10.0
Key some_list contains this value: [1, 3, 5, 7]
Key some_nested_dict contains this value: {'a': 'A', 'b': 'B'}