code: def check_pydot():
      """Returns True if PyDot is available."""
      return pydot is not None
  
file_path: keras/keras/utils/model_visualization.py
imports: import os
  import sys
  from keras.api_export import keras_export
  from keras.utils import io_utils
label_desc: Use image node_id 1 for calling a global function with example usage: check_pydot() and returns: unknown