<｜begin▁of▁sentence｜>### Instruction:
You need to draw a histogram for the given dataset [1, 2, 2, 3, 3, 3, 4, 4, 4, 4] using the CairoHistogramDrawer in igraph, set the drawing area to 400x300 pixels, and save the result to 'histogram.png'. How would you do this in Python?
### Response:
from igraph.drawing import Plot
from igraph.drawing.histogram import CairoHistogramDrawer
import cairo

# Assume 'values' contains the data we want to create a histogram for
values = [1, 2, 2, 3, 3, 3, 4, 4, 4, 4]

# Set up drawing surface and context
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 400, 300)
context = cairo.Context(surface)

# Create a CairoHistogramDrawer instance, associate it with the current context
histogram_drawer = CairoHistogramDrawer(context=context)

# Set the bounding box for the histogram drawer
drawer_bbox = (0, 0, 400, 300)
histogram_drawer.bbox = drawer_bbox

# Draw the histogram
histogram_drawer.draw(values)

# Save the surface to a PNG file
surface.write_to_png('histogram.png')
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