code: def _is_backward_jump(op):
      return "JUMP_BACKWARD" in opname[op]
  
imports: import sys
  import types
  import collections
  import io
  from opcode import *
  from opcode import __all__, _cache_format, _inline_cache_entries, _nb_ops, _specializations, _specialized_instructions
label_desc: Use image node_id 17 for calling a global function with example usage: _is_backward_jump(op) and returns: unknown