Note

This is the documentation for the current state of the development branch of rustworkx. The documentation or APIs here can change prior to being released.

rustworkx.PyDAG.write_edge_list

PyDAG.write_edge_list(path, /, deliminator=None, weight_fn=None)

Write an edge list file from the PyDiGraph object

Parameters:

• path (str) – The path to write the output file to

• deliminator (str) – The optional character to use as a deliminator if not specified " " is used.

• weight_fn (callable) –

  An optional callback function that will be

  passed an edge’s data payload/weight object and is expected to return a string (a TypeError will be raised if it doesn’t return a string). If specified the weight in the output file for each edge will be set to the returned string.

  For example:

  import os
  import tempfile
  
  import rustworkx as rx
  
  graph = rx.generators.directed_path_graph(5)
  path = os.path.join(tempfile.gettempdir(), "edge_list")
  graph.write_edge_list(path, deliminator=',')
  # Print file contents
  with open(path, 'rt') as edge_file:
      print(edge_file.read())
  

  0,1
  1,2
  2,3
  3,4