<｜begin▁of▁sentence｜>### Instruction:
Given a gradient palette with a transition from red to blue containing 10 colors, can you use igraph and cairo to visualize the gradient by filling rectangles with each palette color on an image?
### Response:
import igraph as ig
import cairo

# Creating a gradient palette with two colors
palette = ig.GradientPalette('red', 'blue', 10)

# Define the size of the image
width, height = 400, 100

# Create a Cairo Image Surface to draw on
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
ctx = cairo.Context(surface)

# Define the rectangle area to fill with the gradient
left, top, right, bottom = 0, 0, width, height

# Draw rectangles filled with each color in the gradient palette
rectangle_width = width / len(palette)
for i, color in enumerate(palette):
    ctx.set_source_rgba(*color)
    ctx.rectangle(left + i * rectangle_width, top, rectangle_width, bottom)
    ctx.fill()

# Save the gradient palette visualization to a file
surface.write_to_png('gradient_palette.png')
<|EOT|>
