code: def cmp_contents(filename1, filename2):
      
      with open_readable(filename1, 'rb') as fobj:
          contents1 = fobj.read()
      with open_readable(filename2, 'rb') as fobj:
          contents2 = fobj.read()
      return contents1 == contents2
docs: Returns True if contents of the files are the same
  
      Parameters
      ----------
      filename1 : str
          filename of first file to compare
      filename2 : str
          filename of second file to compare
  
      Returns
      -------
      tf : bool
          True if binary contents of `filename1` is same as binary contents of
          `filename2`, False otherwise.