code: def random_handle(n: int = 6) -> str:
      """
      Returns a random handle of length `n`. Eg. "@randomstr23`
      """
      return "@%s" % random_string(n)
  
file_path: allennlp/allennlp/confidence_checks/task_checklists/utils.py
imports: import string
  from typing import Dict, Callable, List, Union
  import numpy
  import spacy
  from checklist.editor import Editor
label_desc: Use image node_id 7 for calling a global function with example usage: random_handle(n) and returns: unknown