code: def get_object(bucket_name, object_name, default_value):
      """Find an object in the global collection, return a default value if not
      found.
  
      :param bucket_name:str the name of the Bucket that contains the object.
      :param object_name:str the name of the Object.
      :param default_value:GcsObject the default value returned if the object is
          not found.
      :return: tuple the object path and the object.
      :rtype: (str,GcsObject)
      """
      object_path = bucket_name + "/o/" + object_name
      return object_path, GCS_OBJECTS.get(object_path, default_value)
  
imports: import base64
  import error_response
  import hashlib
  import json
  import random
  import re
label_desc: Use image node_id 13 for calling a global function with example usage: get_object(bucket_name, object_name, default_value) and returns: object_path,  GCS_OBJECTS