<｜begin▁of▁sentence｜>### Instruction:
As a tour guide for a technology exploration group visiting a digital art exhibition, imagine you're tasked with explaining how to utilize the CircleDrawer's draw_path method within igraph's drawing module to depict circular paths on a digital canvas without applying strokes or fills, with the width of each circle determining its diameter.

Your group, composed of tech enthusiasts and artists, is particularly interested in understanding how to employ graphical tools to create visually striking digital artworks. In this scenario, you could seamlessly integrate this technical explanation into the context of your guided tour, demonstrating the process of using CircleDrawer's draw_path method to craft captivating circular patterns reminiscent of celestial orbits or abstract compositions.
### Response:
import igraph as ig
from igraph.drawing import CircleDrawer, Plot

# Create an example graph
g = ig.Graph.Tree(3, 2)

# Initialize a plot object
plot = Plot()

# Retrieve the Cairo context from the plot
context = plot.context

# Define a circle drawer for the graph layout
layout = g.layout()
circle_drawer = CircleDrawer(context, bbox=plot.bbox)

# Draw a path (here, just a circle) without stroking or filling it
for vertex in layout:
    x, y = vertex
    width = 20  # Diameter of the circle
    circle_drawer.draw_path(x, y, width, 0)

# To show the plot
plot.show()
<|EOT|>
