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python2-decorator

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python2-numpy: Provides sparse matrix representation of graphs and many numerical scientific tools.
python2-scipy: Provides flexible drawing of graphs.
python2-pygraphviz: Provides graph drawing and graph layout algorithms.
python2-pydot: Provides graph drawing and graph layout algorithms.
python2-pyparsing: Required for pydot, GML file reading.
python2-yaml: Required for YAML format reading and writing.

