docs: added a sample

samples/quickstart.py

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+#!/usr/bin/env python
+
+# Copyright 2020 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Google Analytics Admin API sample quickstart application.
+Example usage:
+    python quickstart.py
+
+This application demonstrates the usage of the Analytics Admin API using
+service account credentials. For more information on service accounts, see
+
+https://cloud.google.com/iam/docs/understanding-service-accounts
+
+The following document provides instructions on setting service account
+credentials for your application:
+
+  https://cloud.google.com/docs/authentication/production
+
+In a nutshell, you need to:
+1. Create a service account and download the key JSON file.
+
+https://cloud.google.com/docs/authentication/production#creating_a_service_account
+
+2. Provide service account credentials using one of the following options:
+- set the GOOGLE_APPLICATION_CREDENTIALS environment variable, the API
+client will use the value of this variable to find the service account key
+JSON file.
+
+https://cloud.google.com/docs/authentication/production#setting_the_environment_variable
+
+OR
+- manually pass the path to the service account key JSON file to the API client
+by specifying the keyFilename parameter in the constructor:
+https://cloud.google.com/docs/authentication/production#passing_the_path_to_the_service_account_key_in_code
+
+To install the latest published package dependency, execute the following:
+  pip install google-analytics-admin
+"""
+
+# [START ga_admin_list_accounts]
+def list_accounts():
+  """Lists the available Google Analytics accounts."""
+  from google.analytics.admin import AnalyticsAdminServiceClient
+  # Using a default constructor instructs the client to use the credentials
+  # specified in GOOGLE_APPLICATION_CREDENTIALS environment variable.
+  client = AnalyticsAdminServiceClient()
+
+  # Displays the configuration information for all Google Analytics accounts
+  # available to the authenticated user.
+  for account in client.list_accounts():
+    print(account)
+# [END ga_admin_list_accounts]
+
+
+if __name__ == "__main__":
+  list_accounts()