Difference Between Dictionary And List In Python
distinguishing between dictionaries and lists in Python
Difference Between Dictionary And List In Python
In Python, a list is a collection of ordered and mutable elements, typically denoted by square brackets []. Lists can store multiple values of various data types, such as integers, strings, and even other lists. Elements within a list are accessed by their index, which starts at 0. On the other hand, a dictionary is a collection of unordered and mutable key-value pairs, represented by curly braces {}. Each key in a dictionary must be unique and immutable, often used as strings, integers, or tuples, while values can be of any data type. Elements in a dictionary are accessed by their keys rather than by their position. Overall, lists are ideal for storing and manipulating sequences of similar items, while dictionaries are suitable for storing data with unique identifiers for quick lookup and retrieval.
To Download Our Brochure: https://www.justacademy.co/download-brochure-for-free
Message us for more information: +91 9987184296
1 - A list in Python is an ordered collection of items that allows duplicates, while a dictionary is an unordered collection of key value pairs.
2) Lists are indexed using numbered positions, starting from 0, while dictionaries are accessed using keys.
3) In a list, the elements are enclosed within square brackets [], whereas in a dictionary, key value pairs are enclosed within curly braces {}.
4) Lists are ideal for storing a collection of items where the order matters, while dictionaries are suitable for storing related data with unique identifiers.
5) List elements are accessed using their index position, whereas dictionary values are accessed using their corresponding keys.
6) Lists are mutable, meaning their elements can be changed, added, or removed, while dictionary keys are immutable and unique within the dictionary.
7) Lists are used when the sequence of elements is important, while dictionaries are beneficial when fast retrieval of values based on keys is required.
8) List operations include append, extend, insert, remove, and pop for manipulating elements, while dictionary methods include get, keys, values, items for handling key value pairs.
9) Lists are commonly used to perform operations like sorting, filtering, and looping through elements, while dictionaries are handy for data retrieval and key based comparisons.
10) Both lists and dictionaries are versatile data structures in Python, each serving unique purposes based on the requirements of the program or data manipulation needs.
Browse our course links : https://www.justacademy.co/all-courses
To Join our FREE DEMO Session: Click Here
Contact Us for more info:
- Message us on Whatsapp: +91 9987184296
- Email id: info@justacademy.co
Real Time Selenium Interview Questions
Java Coding Questions For 5 Years Experience
