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			count += 1
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			count += 1
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		print # nothing, to end the getattr() print above
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		print # nothing, to end the getattr() print above
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		print '%d nodes in the solution' % len(g.vertices)
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		print '%d nodes in the solution' % len(g.vertices)
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	def render_graphviz (self, filename, layout_engine=yapgvb.engines.neato):
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	def render_graphviz (self, filename, layout_engine='neato'):
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		"""Draw the graph given into the file given. This will render
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		"""Draw the graph given into the file given. This will render
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		to SVG, PNG, and JPG."""
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		to SVG, PNG, and JPG."""
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		if no_graphviz:
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		if no_graphviz:
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			raise ValueError # no yapgvb / graphviz installed!
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			raise ValueError # no yapgvb / graphviz installed!