code: def fuzzy_xor(args):
      """Return None if any element of args is not True or False, else
      True (if there are an odd number of True elements), else False."""
      t = f = 0
      for a in args:
          ai = fuzzy_bool(a)
          if ai:
              t += 1
          elif ai is False:
              f += 1
          else:
              return
      return t % 2 == 1
  
imports: from __future__ import annotations
  from typing import Optional
label_desc: Use image node_id 7 for calling a global function with example usage: fuzzy_xor(args) and returns: unknown