<｜begin▁of▁sentence｜>### Instruction:
Given a graph, can you use a CircleDrawer to draw a circle at the given coordinates on a Cairo context?
### Response:
```python
from igraph import Graph, plot
from igraph.drawing.shapes import CircleDrawer
import cairo

# Create a simple graph
g = Graph.Formula('A--B--C', directed=False)

# Initialize Cairo drawing context
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 400, 400)
ctx = cairo.Context(surface)

# Set up basic drawing parameters
ctx.set_source_rgb(0, 0, 0)  # Drawing in black
ctx.set_line_width(2)

# Use a CircleDrawer to draw a circle path
CircleDrawer.draw_path(ctx, center_x=200, center_y=200, width=50)
ctx.stroke()  # Stroke the path to actually draw the circle

# Save the drawing to an image file
surface.write_to_png('circle.png')
```
<|EOT|>
