Introduction to Matplotlib

import matplotlib.pyplot as plt

def main():
    print("This program demonstrates how to use Matplotlib to create a bar chart.")
    print("We will visualize the number of students in different age groups.")

    # Data for the bar chart
    age_groups = ['11-13', '14-16', '17-19']
    num_students = [45, 35, 20]

    # Create a bar chart
    plt.bar(age_groups, num_students)

    # Set the chart title and labels for the axes
    plt.title('Number of Students in Different Age Groups')
    plt.xlabel('Age Groups')
    plt.ylabel('Number of Students')

    # Display the chart
    plt.show()

if __name__ == "__main__":
    main()