code: def get(filename):
      for path in ["..", "."]:
          filepath = os.path.join(path, filename)
          if os.path.exists(filepath):
              with open(filepath) as infile:
                  code = infile.read()
                  # comment = '#line 0 // Start of "%s"\n' % filename
                  comment = '// --- start of "%s" ---\n' % filename
              return comment + code
      return '#error "%s" not found !\n' % filename
  
imports: import os
  import re
label_desc: Use image node_id 1 for calling a global function with example usage: get(filename) and returns: unknown, unknown