docstr: Guess intended endianness from mapping-like ``mapping``
  
  Parameters
  ----------
  wstr : mapping-like
      Something implementing a mapping.  We will guess the endianness
      from looking at the field values
  
  Returns
  -------
  endianness : {'<', '>'}
     Guessed endianness of binary data in ``wstr``
docstr_tok: ["Guess","intended","endianness","from","mapping-like","``","mapping","``","Parameters","--","--","--","--","--","wstr",":","mapping-like","Something","implementing","a","mapping",".","We","will","guess","the","endianness","from","looking","at","the","field","values","Returns","--","--","--","-","endianness",":","{","'","<","'",",","'",">","'","}","Guessed","endianness","of","binary","data","in","``","wstr","``"]
code: def guessed_endian(self, mapping):
      """Guess intended endianness from mapping-like ``mapping``
  
      Parameters
      ----------
      wstr : mapping-like
          Something implementing a mapping.  We will guess the endianness
          from looking at the field values
  
      Returns
      -------
      endianness : {'<', '>'}
         Guessed endianness of binary data in ``wstr``
      """
      raise NotImplementedError
  
imports: from __future__ import annotations
  import numpy
  from .None import imageglobals
  from .batteryrunners import BatteryRunner
  from .volumeutils import Recoder, endian_codes, native_code, pretty_mapping, swapped_code
label_desc: Use image node_id 18 for calling the WrapStruct obj's underlying member method code with example usage: obj.guessed_endian(mapping) without return types