class_docstr: DATE类
class_docstr_tok: ["DATE\u7c7b"]
code: def date2chntext(self):
      date = self.date
      try:
          year, other = date.strip().split("年", 1)
          year = Digit(digit=year).digit2chntext() + "年"
      except ValueError:
          other = date
          year = ""
      if other:
          try:
              month, day = other.strip().split("月", 1)
              month = Cardinal(cardinal=month).cardinal2chntext() + "月"
          except ValueError:
              day = date
              month = ""
          if day:
              day = (
                  Cardinal(cardinal=day[:-1]).cardinal2chntext()
                  + day[-1]
              )
      else:
          month = ""
          day = ""
      chntext = year + month + day
      self.chntext = chntext
      return self.chntext
  
imports: import argparse
  import codecs
  import os
  import re
  import string
  import sys
label_desc: Use image node_id 2 for calling the Date obj's underlying member method code with example usage: obj.date2chntext() and returns: self