Summary  
This chapter introduces how to store integer and floating-point values in variables and use them in arithmetic operations with printing.  

General domain of usage  
Financial calculations

Variables are named storage locations that hold data values. They make it easy to reuse and manipulate values without recalculating them repeatedly.

Definition

Watch this video to see how to create and use variables to store numbers in Python. You'll learn assignment with the equals sign, and how variables make calculations and code organization easier.

 To create a variable, choose a **name** and use the equals sign `=` to assign a **value** to it.  Make sure the variable name is descriptive.

# Variable called `expenses` with value `1200`
expenses = 1200

Variables can also be used to calculate and store new values based on existing ones. This makes the code more flexible and reduces the need for repetitive calculations. Using variables is really **convenient**, and you can also display their values using the `print()` **statement**.

# Monthly expenses amount in dollars
monthly_expenses = 1200

# Discount rate as a decimal (20%)
discount_rate = 0.2

# Calculated total expenses after applying the discount
total_expenses = monthly_expenses * (1 - discount_rate)
print(total_expenses)

Which statement correctly explains how variables work?

Python is an interpreted high-level general-purpose programming language. Unlike HTML, CSS, and JavaScript, which are primarily used for web development, Python is versatile and can be used in various fields, including software development, data science, and back-end development. In this course, you'll explore the core aspects of Python, and by the end, you'll be crafting your own functions!

Dive into the basics of Python, explore your workspace, and perform simple math operations. Learn how to write readable code using comments and handle both basic and advanced mathematical expressions while displaying your results.

How to Store Numbers in Python