code: def _floatconstants():
      if sys.version_info < (2, 6):
          _BYTES = "7FF80000000000007FF0000000000000".decode("hex")
          nan, inf = struct.unpack(">dd", _BYTES)
      else:
          nan = float("nan")
          inf = float("inf")
      return nan, inf, -inf
  
file_path: catboost/contrib/python/simplejson/py3/simplejson/decoder.py
imports: from __future__ import absolute_import
  import re
  import sys
  import struct
  from .compat import PY3, unichr
  from .scanner import make_scanner, JSONDecodeError
label_desc: Use image node_id 2 for calling a global function with example usage: _floatconstants() and returns: nan,  inf,  unknown