code: def main():
      try:
          mod_name = sys.argv[1]
      except IndexError:
          raise OSError("Need module import as input")
      out_fname = pjoin(DOC_SDIR, mod_name + ".rst")
      open(out_fname, "wt").write(TEMPLATE % (mod_name, mod_name))
  
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types