code: def _attach_print_methods(cls, cont):
      for sympy_name, cxx_name in cont[cls.standard].items():
          _attach_print_method(cls, sympy_name, cxx_name)
  
imports: from itertools import chain
  from sympy.codegen.ast import Type, none
  from .codeprinter import requires
  from .c import C89CodePrinter, C99CodePrinter
  from sympy.printing.codeprinter import cxxcode
label_desc: Use image node_id 2 for calling a global function with example usage: _attach_print_methods(cls, cont) without return types