code: def _get_random_character():
      """
      :return: return a random charactor
      """
      return random.choice(string.ascii_letters + string.digits)
  
file_path: textflint/textflint/generation/transformation/NERCN/ent_typos.py
imports: from ....common.utils.word_op import *
  from ..transformation import Transformation
  from ....common.utils.list_op import trade_off_sub_words
  from textflint.generation.transformation.UTCN import CnHomophones
label_desc: Use image node_id 1 for calling a global function with example usage: _get_random_character() and returns: random