class_docstr: Client wrapper to access Google Cloud Datastore.
docstr: Init this method with given project id and optional namespace.
docstr_tok: ["Init","this","method","with","given","project","id","and","optional","namespace","."]
code: def __init__(self, project_id, namespace=None):
      """Init this method with given project id and optional namespace."""
      self._client = datastore.Client(
          project=project_id, namespace=namespace
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import logging
  import math
  import random
  import time
  import traceback
  from google.cloud import datastore
  from google.cloud import storage
  from google.cloud.exceptions import TooManyRequests
label_desc: Use image node_id 1 to create a new CompetitionDatastoreClient object from inherited base classes: object with example: obj = CompetitionDatastoreClient(project_id, namespace)