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Python Built-in Methods – Python Dictionary items() Method

By on Monday, May 17, 2021

Python Dictionary items() Method

Returns a list of key-value pairs in a dictionary

Usage

The items() method returns a list of tuples containing the key:value pairs of the dictionary. The first item in each tuple is the key, and the second item is its associated value.

Syntax

dictionary.items()

Examples

# Print all items from the dictionary
D = {'name': 'Bob', 'age': 25}
L = D.items()
print(L)
# Prints dict_items([('age', 25), ('name', 'Bob')])

items() method is generally used to iterate through both keys and values of a dictionary. The return value is the tuples of (key, value).

# Iterate through both keys and values of a dictionary
D = {'name': 'Bob', 'age': 25}
for x in D.items():
    print(x)
# Prints ('age', 25)
# Prints ('name', 'Bob')

items() Returns View Object

The object returned by items() is a view object. It provides a dynamic view on the dictionary’s entries, which means that when the dictionary changes, the view reflects these changes.

D = {'name': 'Bob', 'age': 25}

# Assign dict items to L
L = D.items()

# modify dict D
D['name'] = 'xx'

# L reflects changes done to dict D
print(L)
# Prints dict_items([('age', 25), ('name', 'xx')])

 

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