Write a program in Python that counts the number of red pixels in a graph

To count the number of red pixels in a graph using Python, we can use the Pillow library which provides an Image class to work with images. Here's a sample program that counts the number of red pixels in an image:

from PIL import Image

# Load the image
image = Image.open("graph.png")

# Get the size of the image
width, height = image.size

# Initialize a counter for red pixels
red_pixels = 0

# Loop through each pixel in the image
for x in range(width):
    for y in range(height):
        # Get the RGB values of the pixel
        r, g, b = image.getpixel((x, y))
        
        # Check if the pixel is red
        if r > 200 and g < 100 and b < 100:
            red_pixels += 1

# Print the number of red pixels
print("Number of red pixels:", red_pixels)

In this program, we first load the image using the Image.open() function. We then get the size of the image using the size attribute. We then loop through each pixel in the image using nested for loops.

For each pixel, we use the getpixel() method to get the RGB values of the pixel. We then check if the pixel is red by checking if the red value is greater than 200 and the green and blue values are less than 100. This is just a rough threshold and may need to be adjusted based on the specific shades of red in the image.

If the pixel is red, we increment the red_pixels counter. Finally, we print the number of red pixels in the image.