Python Program to Comments.

Python program that demonstrates how to use comments in your code :

Program :

# This program calculates the area of a circle

# Import the math module to access the pi constant
import math

# Define the radius of the circle
radius = 5

# Calculate the area of the circle using the formula: A = πr^2
area = math.pi * radius ** 2

# Print the result
print("The area of the circle is:", area)

Output :

The area of the circle is: 78.53981633974483

In this program, we use comments to explain what the program does and how it works. Comments in Python start with the # symbol and continue until the end of the line. They are not executed by the Python interpreter, so they do not affect the behavior of the program.

The first comment explains that the program calculates the area of a circle. The second comment imports the math module, which is needed to access the pi constant. The third comment defines the radius of the circle, and the fourth comment calculates the area using the formula for the area of a circle. Finally, the last comment prints the result.

By adding comments to your code, you can make it easier to understand and maintain.