class_docstr: FRACTION类
class_docstr_tok: ["FRACTION\u7c7b"]
code: def chntext2fraction(self):
      denominator, numerator = self.chntext.split("分之")
      return chn2num(numerator) + "/" + chn2num(denominator)
  
imports: import argparse
  import codecs
  import os
  import re
  import string
  import sys
label_desc: Use image node_id 2 for calling the Fraction obj's underlying member method code with example usage: obj.chntext2fraction() and returns: unknown