code: def test_image_format():
      # Test that these format names don't throw an error
      Image(format="png")
  
      Image(format="jpeg")
  
      Image(format="url")
  
imports: import io
  import os
  from ipywidgets import Image
  import hashlib
  import pkgutil
  import tempfile
  from contextlib import contextmanager
label_desc: Use image node_id 4 for calling a global function with example usage: test_image_format() without return types