Python3 で Google Datastore のデータを削除 (Delete)

Google Datastore にある次のデータを削除する方法です。

datastore_delete.py

#! /usr/bin/python
#
#   datastore_delete.py
#                       May/18/2018
# ------------------------------------------------------------------
from gcloud import datastore
import sys
# ------------------------------------------------------------------
def datastore_delete_proc(client,name):
    kind = 'Cities'
    key = client.key(kind,name)
    client.delete(key)
#
# ------------------------------------------------------------------
sys.stderr.write("*** start ***\n")
key_in = sys.argv[1]
#
print(key_in)
#
try:
    project_id = "my-project-aug-29-2016"
    client = datastore.Client(project_id)
except Exception as ee:
    sys.stderr.write("*** error *** in datastore.Client ***\n")
    sys.stderr.write(str(ee) + "\n")
#
datastore_delete_proc(client,key_in)
#
sys.stderr.write("*** end ***\n")
#
# ------------------------------------------------------------------

実行コマンド

export GOOGLE_APPLICATION_CREDENTIALS="/home/uchida/my_project_Aug-29-2016-7313bb6c3526.json"
#
./datastore_delete.py t0922