Chapter 5 | Sets and Dictionaries -Python Tutorial for Beginners (With Notes) 

In this Python Beginner Tutorial, we will begin learning about dictionaries. Dictionaries allow us to work with key-value pairs in Python. We will go over dictionary methods, how to add and remove values, and also how to loop through the key-value pairs. Let's get started. This Python tutorial explains how to create an empty dictionary, one with elements using both integer and string keys. We then look at how one can add elements to an existing dictionary and update it. We also learn to access and delete elements from a dictionary and then explore the various inbuilt functions used with dictionaries. Next, we move on to sets and understand what are sets, the purpose of sets, how to create sets and the various operations performed on them. Now let us get started and understand Python sets and dictionaries in detail with simple python programming. This video on Python Lists, Tuples and Dictionaries will help you learn about the three fundamental data structures in Python. You will look at lists in Python and understand its characteristics and various methods in Python. You will also learn about Tuples in Python and explore its characteristics and methods in Python. You will then learn about Dictionaries in Python, its characteristics and various methods in Python.
In this video, we are going to learn very important and powerful data structure of Python dictionaries and sets. I will explain the basics concepts and the options available in Python along with the practical code examples. And,
In short, we will discuss the following things in this python tutorial:
1. How Sets and dictionaries actually work?
2. How the best performance can be achieved from these data structures.
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In this video, you will learn how to use dictionaries in Python programming. Watch the full video to learn more about Dictionaries using Python programming.
What is Python? Python is a high-level object-oriented programming language developed by Guido van Rossum in 1989 and was first released in 1991. Python is often called a batteries included language due to its comprehensive standard library. A fun fact about Python is that The name Python was actually taken from the popular BBC comedy show of that time, ""Monty Python's Flying Circus"". Python is widely used these days from data analytics, machine learning, and web development. Python allows you to write programs in fewer lines of code than most of the programming languages. Python as a programming language is growing rapidly. It's the right time to get trained in Python.
A programming language needs to have support for numbers to carry out calculations. In Python, the numbers are categorized into different data-types and the types are implemented in Python as classes.There are three numeric types in Python: int for integers, float for decimal numbers, and complex for complex numbers.
This Tutorials explains the difference between List, Tuple, Set and Dictionary in Python DIFFERENCE BETWEEN LIST - square braces TUPLE - rounded braces SET - The set keyword DICTIONARY -
curly braces: made up of key-value pairs list1 =
["Computer", "Printer", "TV", "Camera", 89, 30.8] tuple1 = ("Computer", "Printer", "TV", "Camera", 89, 30.8)
set1 = set(["Computer", "Printer", "TV", "Camera", 89, 30.8])
dict1 = {
1: "Monday",
2: "Tuesday",
3: "Wednesday"
}