code: def options(self, parser, env):
          
          parser.add_option(
              "--epdb", action="store_true", dest="epdb_debugErrors",
              default=env.get('NOSE_EPDB', False),
              help="Drop into extended debugger on errors")
          parser.add_option(
              "--epdb-failures", action="store_true",
              dest="epdb_debugFailures",
              default=env.get('NOSE_EPDB_FAILURES', False),
              help="Drop into extended debugger on failures")
docs: Register commandline options.