code: def op_at_code_loc(code, loc, opc):
      
      try:
          op = code[loc]
      except IndexError:
          return 'got IndexError'
      return opc.opname[op]
docs: Return the instruction name at code[loc] using
      opc to look up instruction names. Returns 'got IndexError'
      if code[loc] is invalid.
  
      `code` is instruction bytecode, `loc` is an offset (integer) and
      `opc` is an opcode module from `xdis`.