docs: def inject_python_code2(fpath, patch_code, tag):
      """ Does autogeneration stuff """
      import utool as ut
      text = ut.readfrom(fpath)
      start_tag = '# <%s>' % tag
      end_tag = '# </%s>' % tag
      new_text = ut.replace_between_tags(text, patch_code, start_tag, end_tag)
      ut.writeto(fpath, new_text)