code: def __call__(self, w):
      if self.data[self.i] == w:
          return w
      self.i += 1
      pos = bisect_left(self.data, w, self.i)
      if pos < len(self.data):
          return self.data[pos]
      else:
          return None
  
imports: import gzip
  import os.path
  from bisect import bisect_left
  from whoosh.compat import permutations
  from whoosh.compat import xrange
  from whoosh.automata import fsa, glob, lev
  from whoosh.support.levenshtein import levenshtein
label_desc: Use image node_id 2 for calling the Skipper obj's underlying member method code with example usage: obj.__call__(w) and returns: w, self, None