class_docstr: Abstract class defining required interface for var readers
class_docstr_tok: ["Abstract","class","defining","required","interface","for","var","readers"]
code: def __init__(self, file_reader):
      pass
  
imports: import operator
  import functools
  import numpy
  from scipy._lib import doccer
  from .None import byteordercodes
label_desc: Use image node_id 1 to create a new MatVarReader object  with example: obj = MatVarReader(file_reader)