code: def has_letter(word):
      """Returns true if `word` contains at least one character in [A-Za-z]."""
      return re.search("[A-Za-z]+", word) is not None
  
imports: import re
  import string
  import flair
  import jieba
  from .importing import LazyLoader
label_desc: Use image node_id 1 for calling a global function with example usage: has_letter(word) and returns: unknown