Introduction

A matrix is a two-dimensional array of numbers arranged in rows and columns. In Python, you can create and display a matrix using lists of lists. This guide will walk you through creating a Python program to display a matrix. We’ll explain the code, how to run it, and how to understand the output.

Python Code to Display a Matrix

# Function to display a matrix
def display_matrix(matrix):
    for row in matrix:
        for element in row:
            print(element, end=" ")
        print()  # Newline after each row

# Main function
def main():
    # Define a matrix (2D list)
    matrix = [
        [1, 2, 3],
        [4, 5, 6],
        [7, 8, 9]
    ]
    
    # Display the matrix
    print("The matrix is:")
    display_matrix(matrix)

# Run the main function
if __name__ == "__main__":
    main()

Explanation of the Code

1. Defining the Matrix:
   • The matrix is defined as a list of lists in Python. Each inner list represents a row of the matrix. In the example code, the matrix is defined as:

matrix = [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9]
]

This creates a 3×3 matrix where the numbers 1 to 9 are arranged in a grid.

Displaying the Matrix:

• The display_matrix() function is designed to take a matrix as input and print it row by row.
• The outer for loop iterates through each row in the matrix.
• The inner for loop iterates through each element in the row and prints it on the same line, separated by a space.
• After printing each row, a print() statement is used to move to the next line, ensuring the matrix is displayed correctly.

Main Function:

• The main() function is where the matrix is defined and the display_matrix() function is called.
• The if __name__ == "__main__": statement ensures that the main() function is run only when the script is executed directly, not when it’s imported as a module.

Running the Code:

• Save the code in a file, for example, display_matrix.py.
• Run the script in a Python environment or terminal using the command.

python display_matrix.py

Output

The matrix is:
1 2 3 
4 5 6 
7 8 9 

How Output is Displayed

The display_matrix() function prints each row of the matrix on a new line.

The numbers within each row are separated by a space.

The output format reflects the structure of the matrix, making it easy to visualize the 2D grid.

Conclusion

This Python program demonstrates how to define and display a matrix using a list of lists. By understanding the structure of the code and how the matrix is processed row by row, you can easily modify or expand this program to work with different matrices or implement more complex matrix operations.

The matrix was successfully displayed in a readable format, with each element printed in the correct position within the grid. This approach can be used in various applications, including mathematical computations, data representation, and more.

Vist These Website To Learn More about Python

Python Lists Documentation – Official Python documentation on lists, which is fundamental for creating matrices.

GeeksforGeeks – Python Program to Print a Matrix – A practical guide on how to print matrices in Python.

W3Schools – Python Arrays – Introduction to arrays and how they relate to lists in Python.