code: def test_zero():
      start = time.perf_counter()
      for f in range(20000):
          x = creatorFunc().digest()
      end = time.perf_counter()
  
      print(("%2.2f" % (end - start)), "seconds", '[20000 "" digests]')
  
imports: import sys
  import time
  import hashlib
label_desc: Use image node_id 4 for calling a global function with example usage: test_zero() without return types