What is meant by dictionary in python?Give suitable example.
What is meant by dictionary in python?Give suitable example.
Ask by Amrita Bhattacharjee
Updated 01 May 2023
In Python, a dictionary is a data structure that stores a collection of key-value pairs, where each key maps to a specific value. It is also known as an associative array, hash map, or simply a map.
Dictionaries in Python are created using curly braces {} with key-value pairs separated by colons :
You can access the values in a dictionary using their keys. For example, to get the age of "Alice", you can use the following code:
Dictionaries in Python are very versatile and can be used in a wide range of applications, such as data analysis, machine learning, and web development.
Dictionaries in Python are used to store data values in a key: value pair; this is unlike other data types that can hold only single values as an element. It contains ordered mutable and non-duplicate values.
We can create a dictionary in Python as follows:
The values stored in a dictionary can be of any data type, and can also be duplicated. The keys, however, cannot be duplicated and must be immutable. The keys are also case-sensitive
We can add elements to a dictionary by using a new index key and assigning the required value to it.
To update the items within a dictionary, we can use the update() method. If the item does not exist in the dictionary, it will be added.