code: def __repr__(self):
      return "<Marker({0!r})>".format(str(self))
  
imports: from __future__ import absolute_import, division, print_function
  import operator
  import os
  import platform
  import sys
  from pkg_resources.extern.pyparsing import ParseException, ParseResults, stringStart, stringEnd
  from pkg_resources.extern.pyparsing import ZeroOrMore, Group, Forward, QuotedString
  from pkg_resources.extern.pyparsing import Literal
  from ._compat import string_types
  from .specifiers import Specifier, InvalidSpecifier
label_desc: Use image node_id 3 for calling the Marker obj's underlying member method code with example usage: obj.__repr__() and returns: str