code: def plus_or_dot(pieces):
      """Return a + if we don't already have one, else return a ."""
      if "+" in pieces.get("closest-tag", ""):
          return "."
      return "+"
  
imports: import errno
  import functools
  import os
  import re
  import subprocess
  import sys
  from typing import Callable, Dict
label_desc: Use image node_id 9 for calling a global function with example usage: plus_or_dot(pieces) and returns: str, str