1. Introduction

1.1 Goal of the Tutorial

The goal of this tutorial is to provide a clear understanding of how to declare variables and assign values to them in Python.

1.2 Learning Outcomes

By the end of this tutorial, you should be able to:
- Understand what a variable is
- Declare variables in Python
- Assign values to variables

1.3 Prerequisites

Basic knowledge of Python programming is beneficial but not mandatory.

2. Step-by-Step Guide

2.1 Variables in Python

A variable in Python acts as a container to store data. Unlike other programming languages, Python does not require a specific command to declare a variable. A variable is created the moment you first assign a value to it.

2.2 Declaring Variables and Assigning Values

To declare a variable in Python, you simply write the variable name, followed by an equals sign (=), and then the value you want to assign to it. For example, x = 5. Here, x is the variable, and 5 is the value assigned to it.

3. Code Examples

3.1 Code Example 1

# Declaring a variable named 'x' and assigning the value 5 to it
x = 5

# Print the value of 'x'
print(x)

# Expected output: 5

In this example, we declare a variable x and assign the value 5 to it. We then print the value of x, which outputs 5.

3.2 Code Example 2

# Declaring multiple variables and assigning values
x, y, z = "Apple", "Orange", "Banana"

# Print the values of the variables
print(x)
print(y)
print(z)

# Expected output: 
# Apple
# Orange
# Banana

In this example, we declare three variables x, y, and z, and assign the values "Apple", "Orange", and "Banana" to them, respectively. We then print the values of the variables, which outputs "Apple", "Orange", and "Banana".

4. Summary

In this tutorial, we learned that variables in Python are created the moment you first assign a value to it. We explored how to declare variables and assign values to them.

To further your understanding of Python variables, you could explore different data types that can be assigned to variables, such as strings, integers, floats, lists, dictionaries, etc.

5. Practice Exercises

5.1 Exercise 1

Declare a variable name and assign your name to it. Print the value of the variable.

5.2 Exercise 2

Declare three variables a, b, and c and assign the values 5, 3.2, and "Hello" to them, respectively. Print the values of the variables.

5.3 Exercise 3

Swap the values of two variables x and y, where x = 100 and y = 200. Print the values of x and y after swapping.

Solutions

5.1 Solution to Exercise 1

# Declare a variable 'name' and assign your name to it
name = "John"

# Print the value of the variable
print(name)

5.2 Solution to Exercise 2

# Declare three variables 'a', 'b', and 'c'
a, b, c = 5, 3.2, "Hello"

# Print the values of the variables
print(a)
print(b)
print(c)

5.3 Solution to Exercise 3

# Declare two variables 'x' and 'y'
x, y = 100, 200

# Swap the values
x, y = y, x

# Print the values of 'x' and 'y' after swapping
print(x)
print(y)

The above code will output 200 and 100, which are the swapped values of x and y.