code: def text_isdigit(word):
      return str(word.isdigit())
  
file_path: underthesea/underthesea/feature_engineering/feature.py
imports: import re
  from os.path import join, dirname
  from underthesea.corpus import DictionaryLoader
label_desc: Use image node_id 2 for calling a global function with example usage: text_isdigit(word) and returns: str