code: def __init__(
      self, codes, separator="@@", vocab=None, glossaries=None
  ):
      # check version information
      firstline = codes.readline()
      if firstline.startswith("#version:"):
          self.version = tuple(
              [
                  int(x)
                  for x in re.sub(
                      r"(\.0+)*$", "", firstline.split()[-1]
                  ).split(".")
              ]
          )
      else:
          self.version = (0, 1)
          codes.seek(0)
  
      self.bpe_codes = [tuple(item.split()) for item in codes]
  
      # some hacking to deal with duplicates (only consider first instance)
      self.bpe_codes = dict(
          [
              (code, i)
              for (i, code) in reversed(list(enumerate(self.bpe_codes)))
          ]
      )
  
      self.bpe_codes_reverse = dict(
          [
              (pair[0] + pair[1], pair)
              for pair, i in self.bpe_codes.items()
          ]
      )
  
      self.separator = separator
  
      self.vocab = vocab
  
      self.glossaries = glossaries if glossaries else []
  
      self.cache = {}
  
imports: from __future__ import unicode_literals, division
  import sys
  import codecs
  import io
  import argparse
  import json
  import re
  from collections import defaultdict
  from io import open
label_desc: Use image node_id 1 to create a new BPE object from inherited base classes: object with example: obj = BPE(codes, separator, vocab, glossaries)