4.9.6 Random Color Square CodeHS Answers

The most common answer for the 4.9.6 Random Color Square CodeHS is:

import random
set_size(480, 400)
This graphics program should draw a square.
The fill color should be randomly choosen from
the COLORS list
center_x = get_width() / 2
center_y = get_height() / 2
SIDE_LENGTH = 100
COLORS = [Color.red, Color.orange, Color.yellow, Color.green, Color.blue,
Color.purple, Color.black, Color.gray]
square = Rectangle(SIDE_LENGTH, SIDE_LENGTH)
square.set_position(center_x, center_y)
square.set_color(random.randint(COLORS))
add(square)

This code for drawing a square with a random color from the COLORS list is almost correct, but there’s a minor issue in the random.randint(COLORS) part. random.randint() is used for generating random integers and is not suitable for selecting a random element from a list.

Instead, we should use random.choice() to select a random color from the COLORS list. Additionally, the square’s position needs to be adjusted to ensure it’s centered.

Here’s the corrected version of the code:

import random

set_size(480, 400)

center_x = get_width() / 2 - SIDE_LENGTH / 2  # Adjust to center the square
center_y = get_height() / 2 - SIDE_LENGTH / 2  # Adjust to center the square
SIDE_LENGTH = 100

# List of colors
COLORS = [Color.red, Color.orange, Color.yellow, Color.green, Color.blue,
          Color.purple, Color.black, Color.gray]

# Create a square
square = Rectangle(SIDE_LENGTH, SIDE_LENGTH)

# Set the position and random color of the square
square.set_position(center_x, center_y)
square.set_color(random.choice(COLORS))  # Choose a random color

# Add the square to the canvas
add(square)

In this corrected code:

• random.choice(COLORS) is used to select a random color from the COLORS list.
• The center_x and center_y calculations are adjusted to account for the square’s dimensions, ensuring the square is truly centered on the canvas.

Run this code in a suitable Python graphics environment, and it should draw a square at the center of the canvas with a random color from the specified list.

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