code: def unpack2(fmt, data, obj=None):
      length = calcsize(fmt)
      return unpack(fmt, data[:length], obj), data[length:]
  
file_path: catboost/contrib/python/fonttools/fontTools/misc/sstruct.py
imports: from fontTools.misc.fixedTools import fixedToFloat, floatToFixed
  from fontTools.misc.textTools import tobytes, tostr
  import struct
  import re
label_desc: Use image node_id 3 for calling a global function with example usage: unpack2(fmt, data, obj) and returns: unpack,  data