class_docstr: recursive visitor to write unicode. 
class_docstr_tok: ["recursive","visitor","to","write","unicode","."]
code: def list(self, obj):
      assert id(obj) not in self.visited
      self.visited[id(obj)] = 1
      for elem in obj:
          self.visit(elem)
  
imports: import sys, re
label_desc: Use image node_id 5 for calling the SimpleUnicodeVisitor obj's underlying member method code with example usage: obj.list(obj) without return types