Table of Contents

    Comprehensive Guide to Python Dictionary Methods: Functions and Examples

    Rumman Ansari September 22, 2024 604 views Subject Details

    Python Dictionary Methods

    Sr. No. Method Description Example
    1 clear() Removes all the elements from the dictionary my_dict = {'name': 'John', 'age': 25}
    my_dict.clear()
    print(my_dict)
    Output: {}
    2 copy() Returns a copy of the dictionary my_dict = {'name': 'John', 'age': 25}
    new_dict = my_dict.copy()
    print(new_dict)
    Output: {'name': 'John', 'age': 25}
    3 fromkeys() Returns a dictionary with the specified keys and value keys = ['name', 'age']
    value = 'Unknown'
    my_dict = dict.fromkeys(keys, value)
    print(my_dict)
    Output: {'name': 'Unknown', 'age': 'Unknown'}
    4 get() Returns the value of the specified key my_dict = {'name': 'John', 'age': 25}
    value = my_dict.get('name')
    print(value)
    Output: 'John'
    5 items() Returns a list containing a tuple for each key-value pair my_dict = {'name': 'John', 'age': 25}
    items = my_dict.items()
    print(items)
    Output: [('name', 'John'), ('age', 25)]
    6 keys() Returns a list containing the dictionary's keys my_dict = {'name': 'John', 'age': 25}
    keys = my_dict.keys()
    print(keys)
    Output: ['name', 'age']
    7 pop() Removes the element with the specified key my_dict = {'name': 'John', 'age': 25}
    value = my_dict.pop('age')
    print(value)
    Output: 25
    8 popitem() Removes the last inserted key-value pair my_dict = {'name': 'John', 'age': 25}
    item = my_dict.popitem()
    print(item)
    Output: ('age', 25)
    9 setdefault() Returns the value of the specified key. If the key does not exist: insert the key, with the specified value my_dict = {'name': 'John'}
    value = my_dict.setdefault('age', 25)
    print(value)
    Output: 25
    10 update() Updates the dictionary with the specified key-value pairs my_dict = {'name': 'John'}
    my_dict.update({'age': 25})
    print(my_dict)
    Output: {'name': 'John', 'age': 25}
    11 values() Returns a list of all the values in the dictionary my_dict = {'name': 'John', 'age': 25}
    values = my_dict.values()
    print(values)
    Output: ['John', 25]

    I hope this helps! Let me know if you have any more questions.