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This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.

parse_adjlist

parse_adjlist(lines, comments='#', delimiter=None, create_using=None, nodetype=None)[source]

Parse lines of a graph adjacency list representation.

Parameters:
  • lines (list or iterator of strings) – Input data in adjlist format
  • create_using (NetworkX graph container) – Use given NetworkX graph for holding nodes or edges.
  • nodetype (Python type, optional) – Convert nodes to this type.
  • comments (string, optional) – Marker for comment lines
  • delimiter (string, optional) – Separator for node labels. The default is whitespace.
  • create_using – Use given NetworkX graph for holding nodes or edges.
Returns:

G – The graph corresponding to the lines in adjacency list format.
Return type:

NetworkX graph

Examples

>>> lines = ['1 2 5',
...          '2 3 4',
...          '3 5',
...          '4',
...          '5']
>>> G = nx.parse_adjlist(lines, nodetype = int)
>>> G.nodes()
[1, 2, 3, 4, 5]
>>> G.edges()
[(1, 2), (1, 5), (2, 3), (2, 4), (3, 5)]

See also

read_adjlist()