write_graphml(G, path, encoding='utf-8', prettyprint=True, infer_numeric_types=False, named_key_ids=False)¶
Write G in GraphML XML format to path
This function uses the LXML framework and should be faster than the version using the xml library.
A networkx graph
- pathfile or string
File or filename to write. Filenames ending in .gz or .bz2 will be compressed.
- encodingstring (optional)
Encoding for text data.
- prettyprintbool (optional)
If True use line breaks and indenting in output XML.
Determine if numeric types should be generalized. For example, if edges have both int and float ‘weight’ attributes, we infer in GraphML that both are floats.
- named_key_idsbool (optional)
If True use attr.name as value for key elements’ id attribute.
This implementation does not support mixed graphs (directed and unidirected edges together) hyperedges, nested graphs, or ports.
>>> G = nx.path_graph(4) >>> nx.write_graphml_lxml(G, "fourpath.graphml")