code: def coordinates(g, nodes):
      
      c = [g.node[n]['coordinate'] for n in nodes]
      return c
docs: Extract (lon, lat) coordinate pairs from nodes in an osmgraph
  
      osmgraph nodes have a 'coordinate' property on each node. This is
      a shortcut for extracting a coordinate list from an iterable of nodes
  
      >>> g = osmgraph.parse_file(filename)
      >>> node_ids = g.nodes()[:3]  # Grab 3 nodes
      [61341696, 61341697, 61341698]
      >>> coords = coordinates(g, node_ids)
      [(-71.0684107, 42.3516822),
       (-71.133251, 42.350308),
       (-71.170641, 42.352689)]
  
  
      Parameters
      ----------
      g : networkx graph created with osmgraph
      nodes : iterable of node ids
  
      Returns
      -------
      List of (lon, lat) coordinate pairs