To find the area of a square in Python, you can use the following program:
side = float(input("Enter the length of a side of the square: "))
area = side ** 2
print("The area of the square is", area)
In this program, we first prompt the user to enter the length of a side of the square using the input() function, and then convert the input to a float using the float() function. We then use the exponential operator ** to calculate the area of the square, which is the square of the length of its side. Finally, we use the print() function to display the result to the user.
This program will output the area of the square based on the input provided by the user.
Note that the area variable in this program will store the area of the square as a float value. If you want to output the area as an integer, you can use the int() function to convert the result to an integer before printing it.