code: def main():
      
      from optparse import OptionParser
  
      parser = OptionParser(usage="%prog [options]")
      parser.add_option(
          "--werkzeug-path",
          "-p",
          dest="path",
          default="..",
          help="the path to the werkzeug package. defaults to cwd",
      )
      parser.add_option(
          "--compare",
          "-c",
          dest="compare",
          nargs=2,
          default=False,
          help="compare two hg nodes of Werkzeug",
      )
      parser.add_option(
          "--init-compare",
          dest="init_compare",
          action="store_true",
          default=False,
          help="Initializes the comparison feature",
      )
      options, args = parser.parse_args()
      if args:
          parser.error("Script takes no arguments")
      if options.compare:
          compare(*options.compare)
      elif options.init_compare:
          init_compare()
      else:
          run(options.path)
docs: The main entrypoint.