docs: def PYTHON_VERSION(stats, info):
      """Python interpreter version.
  
      This is a flag you can pass to `Stats.submit()`.
      """
      # Some versions of Python have a \n in sys.version!
      version = sys.version.replace(' \n', ' ').replace('\n', ' ')
      python = ';'.join([str(c) for c in sys.version_info] + [version])
      info.append(('python', python))