Difference Between Set And Dictionary In Python
difference between set and dictionary in python: a comparison
Difference Between Set And Dictionary In Python
In Python, a set is an unordered collection of unique elements, whereas a dictionary is a collection of key-value pairs where each key is unique. A set is used to store distinct values and does not allow duplicate elements, making it suitable for applications where you need to enforce uniqueness or perform set operations like union, intersection, and difference. On the other hand, a dictionary is used to store key-value pairs, allowing you to quickly retrieve values based on their associated keys. While sets are enclosed in curly braces {} and dictionaries in curly braces {} with key-value pairs separated by colons, the main difference lies in the fact that sets are primarily concerned with the uniqueness of elements, whereas dictionaries focus on key-value relationships.
To Download Our Brochure: https://www.justacademy.co/download-brochure-for-free
Message us for more information: +91 9987184296
1 - Data Structure Type:
Sets and dictionaries are both data structures in Python, but they serve different purposes.
2) Content Storage:
A set in Python is an unordered collection of unique elements, while a dictionary is a collection of key value pairs.
3) Accessing Elements:
Sets are accessed by their values, while dictionaries are accessed by their keys.
4) Mutability:
Sets are mutable, meaning their elements can be added or removed, whereas dictionaries are also mutable but in terms of updating or deleting key value pairs.
5) Uniqueness:
In a set, each element is unique, meaning it can only occur once, while in a dictionary, keys must be unique, but values can be repeated.
6) Use Cases:
Sets are commonly used when you need to work with unique elements or perform set operations like union, intersection, and difference. Dictionaries are useful for mapping keys to values and are frequently used in scenarios where quick lookups are required.
7) Syntax:
Sets are created using curly braces `{}`, while dictionaries are created using curly braces `{}` with key value pairs separated by a colon `:`.
8) Iterability:
Both sets and dictionaries are iterable in Python, meaning you can loop over their elements.
9) Comparison Operations:
Sets support operations like union, intersection, difference, and subset checks, which can be very useful in various programming scenarios. Dictionaries on the other hand, provide direct access to values using keys.
10) Memory Efficiency:
Sets generally require less memory as compared to dictionaries because they only store unique elements without any additional values like key value pairs.
Consider incorporating these points when explaining the differences between sets and dictionaries to students in your training program.
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
Java 8 Coding Interview Questions
Java Architect Interview Questions
Java Collections Coding Interview Questions And Answers For Experienced
