Difference Between List And Dictionary In Python
distinguishing features of lists and dictionaries in Python
Difference Between List And Dictionary In Python
In Python, a list is an ordered collection of items that can be of mixed data types and is mutable, meaning its elements can be changed after creation by using indices. On the other hand, a dictionary is an unordered collection of key-value pairs that allows you to associate a key with a value, making it easy to retrieve values based on their corresponding keys. Unlike lists, dictionaries are accessed using keys instead of indices, and they are mutable. Lists are typically used for storing and accessing multiple values in a sequential order, while dictionaries are ideal for mapping unique keys to corresponding values for quick lookups and accessing data based on specific identifiers.
To Download Our Brochure: https://www.justacademy.co/download-brochure-for-free
Message us for more information: +91 9987184296
1 - Lists in Python are ordered collections of items, whereas dictionaries are unordered collections of items that are accessed by keys.
2) List elements are accessed by index numbers, whereas dictionary elements are accessed by keys that can be of any immutable data type.
3) Lists allow duplicate elements, but dictionary keys must be unique.
4) Lists are denoted by square brackets [ ], while dictionaries are denoted by curly braces { } with key value pairs separated by a colon.
5) Lists are ideal for storing homogeneous data elements, while dictionaries are suited for storing key value pairs.
6) Lists are commonly used for iterating and storing sequential data, while dictionaries are efficient for quick lookups and data retrieval based on keys.
7) Adding elements to a list is done using append() or extend() methods, while adding elements to a dictionary is done by assigning values to keys.
8) Lists are mutable, meaning their elements can be changed after creation, whereas dictionary keys are immutable and cannot be modified once created.
9) List comprehensions are commonly used for creating lists based on existing iterables, while dictionary comprehensions can be used to create dictionaries in a similar manner.
10) Lists are used for tasks like filtering, sorting, and mapping elements, while dictionaries are used for tasks that require quick and efficient data retrieval based on keys.
11) Lists behave like arrays in other programming languages, while dictionaries behave like hash tables or associative arrays.
12) Lists can be used to maintain a sequential order of elements, while dictionaries provide a mapping between unique keys and corresponding values.
For your training program, it is essential to cover these differences thoroughly to help students understand the distinct characteristics and usage scenarios of lists and dictionaries in Python effectively.
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 Interview Questions For 10 Years Experience
Node Js Tricky Interview Questions
What Is Difference Between Html And Dhtml
