docstr: 检查整个字符串是否为中文
  Args:
      string (str): 需要检查的字符串,包含空格也是False
  Return
      bool
docstr_tok: ["\u68c0\u67e5\u6574\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u4e2d\u6587","Args",":","string","(","str",")",":","\u9700\u8981\u68c0\u67e5\u7684\u5b57\u7b26\u4e32",",","\u5305\u542b\u7a7a\u683c\u4e5f\u662fFalse","Return","bool"]
code: def is_chinese(self, string):
      """
      检查整个字符串是否为中文
      Args:
          string (str): 需要检查的字符串,包含空格也是False
      Return
          bool
      """
      if len(string) <= 1:  # 去除只有单个字或者为空的字符串
          return False
  
      for chart in string:  # 把除了中文的所有字母、数字、符号去除
          if chart < "\u4e00" or chart > "\u9fff":
              return False
  
      return True
  
file_path: PaddleHub/modules/text/text_generation/reading_pictures_writing_poems/module.py
imports: import argparse
  import ast
  import os
  from translate import Translator
  import paddlehub
  from paddlehub.module.module import moduleinfo
  from paddlehub.module.module import runnable
label_desc: Use image node_id 2 for calling the ReadingPicturesWritingPoems obj's underlying member method code with example usage: obj.is_chinese(string) and returns: True, False, False