code: def add_filename_field(node, filename):
      for descendant in ast.walk(node):
          descendant.filename = filename
  
imports: from pythran.passmanager import Transformation
  from pythran.tables import MODULES, pythran_ward
  from pythran.syntax import PythranSyntaxError
  import gast
  import logging
  import os
label_desc: Use image node_id 1 for calling a global function with example usage: add_filename_field(node, filename) without return types