class_docstr: Ad-hoc hack to recognize all punctuation and symbols.
class_docstr_tok: ["Ad-hoc","hack","to","recognize","all","punctuation","and","symbols","."]
code: def __init__(self):
      punctuation = self.property_chars("P")
      self.nondigit_punct_re = re.compile(
          r"([^\d])([" + punctuation + r"])"
      )
      self.punct_nondigit_re = re.compile(
          r"([" + punctuation + r"])([^\d])"
      )
      self.symbol_re = re.compile(
          "([" + self.property_chars("S") + "])"
      )
  
file_path: flax/examples/wmt/bleu.py
imports: import collections
  import math
  import re
  import sys
  import unicodedata
  import numpy
label_desc: Use image node_id 1 to create a new UnicodeRegex object  with example: obj = UnicodeRegex()