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I am working on some algorithms that create network graphs, and I am finding it really hard to debug the output. The code is written in Python, and I am looking for the simplest way to view the resulting network.

Every node has a reference to its parent elements, but a helper function could be written to format the network in any other way.

What is the simplest way to display a network graph from Python? Even if it's not fully written in Python, ie it uses some other programs available to Linux, it would be fine.

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It sounds like you want something to help debugging the network you are constructing. For this you might want to consider implementing a function that converts your network to DOT, a graph description language, which can then be rendered to a graph visualization using a number of tools, such as GraphViz. You can then log the output from this function to help debug.

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This is exactly how I sorted it out. Thanks!
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Have you tried Netwulf? It takes a networkx.Graph object as input and launches an interactive d3-powered visualization in a separate browser window. The resulting image (and data) can then be posted back to Python for further processing.

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Disclaimer: I'm a co-author of Netwulf.

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Think about using existing graph libraries for your problem domain, e.g. NetworkX. Drawing can be done from there with matplotlib or pygraphviz.

For bigger projects, you might also want to check out a graph database like Neo4j with its toolkit (and own query language CYPHER) for working with python.

A good interface markup is also GraphML, can be useful with drawing tools like yEd in case you have small graphs and need some manual finish.

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