docstr: Returns the nodes and edges on the path from node p to its ancestor w.
docstr_tok: ["Returns","the","nodes","and","edges","on","the","path","from","node","p","to","its","ancestor","w","."]
code: def trace_path(self, p, w):
      """
      Returns the nodes and edges on the path from node p to its ancestor w.
      """
      Wn = [p]
      We = []
      while p != w:
          We.append(self.parent_edge[p])
          p = self.parent[p]
          Wn.append(p)
      return Wn, We
  
imports: from itertools import chain, islice, repeat
  from math import ceil, sqrt
  import networkx
  from networkx.utils import not_implemented_for
label_desc: Use image node_id 4 for calling the _DataEssentialsAndFunctions obj's underlying member method code with example usage: obj.trace_path(p, w) and returns: Wn,  We