Python 3 reference · Dictionary Methods

Python Dictionary items() Method

Return a live view of the dictionary's (key, value) pairs, used to loop over keys and values together.

Syntax

dict.items()

A dict_items view that reflects later changes.

Loop over keys and valuesTry it yourself

prices = {"tea": 2.5, "cake": 4.0}
for name, price in prices.items():
    print(f"{name}: {price:.2f}")

Output

tea: 2.50
cake: 4.00

Sort by valueTry it yourself

scores = {"Ada": 91, "Linus": 88, "Grace": 95}
print(sorted(scores.items(), key=lambda kv: kv[1], reverse=True))

Output

[('Grace', 95), ('Ada', 91), ('Linus', 88)]

Views are liveTry it yourself

d = {"x": 1}
view = d.items()
d["y"] = 2
print(view)  # the view updates

Output

dict_items([('x', 1), ('y', 2)])

Version	Change
Python 3.0	Added

dict.keys() · Return a live view of the dictionary's keys. Supports len(), in and set operations such as & and |.
dict.values() · Return a live view of the dictionary's values, for looping or for functions such as sum() and max().
dict.get() · Return the value for a key, or a default (None unless given) if the key is missing, without raising KeyError.
Python Dictionaries · tutorial