code: def _zh_len(s):
      """
      Calculate text length in Chinese
      """
      try:
          return len(s.encode("gb2312"))
      except ValueError:
          return len(s)
  
file_path: mars/docs/source/norm_zh.py
imports: import datetime
  import os
  from babel.messages import pofile
  from babel.messages.pofile import escape
label_desc: Use image node_id 1 for calling a global function with example usage: _zh_len(s) and returns: len, len