diff --git a/appengine/flexible_python37_and_earlier/datastore/README.md b/appengine/flexible_python37_and_earlier/datastore/README.md
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-# Python Google Cloud Datastore sample for Google App Engine Flexible Environment
-
-[![Open in Cloud Shell][shell_img]][shell_link]
-
-[shell_img]: http://gstatic.com/cloudssh/images/open-btn.png
-[shell_link]: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/python-docs-samples&page=editor&open_in_editor=appengine/flexible_python37_and_earlier/datastore/README.md
-
-This sample demonstrates how to use [Google Cloud Datastore](https://cloud.google.com/datastore/) on [Google App Engine Flexible Environment](https://cloud.google.com/appengine).
-
-## Setup
-
-Before you can run or deploy the sample, you will need to enable the Cloud Datastore API in the [Google Developers Console](https://console.developers.google.com/project/_/apiui/apiview/datastore/overview).
-
-## Running locally
-
-Refer to the [top-level README](../README.md) for instructions on running and deploying.
-
-When running locally, you can use the [Google Cloud SDK](https://cloud.google.com/sdk) to provide authentication to use Google Cloud APIs:
-
-    $ gcloud init
-
-Starting your application:
-
-    $ python main.py
diff --git a/appengine/flexible_python37_and_earlier/datastore/app.yaml b/appengine/flexible_python37_and_earlier/datastore/app.yaml
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-# Copyright 2021 Google LLC
-#
-# 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.
-
-runtime: python
-env: flex
-entrypoint: gunicorn -b :$PORT main:app
-
-runtime_config:
-  python_version: 3
diff --git a/appengine/flexible_python37_and_earlier/datastore/main.py b/appengine/flexible_python37_and_earlier/datastore/main.py
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-# Copyright 2015 Google LLC.
-#
-# 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.
-
-import datetime
-import logging
-import socket
-
-from flask import Flask, request
-from google.cloud import datastore
-
-
-app = Flask(__name__)
-
-
-def is_ipv6(addr):
-    """Checks if a given address is an IPv6 address."""
-    try:
-        socket.inet_pton(socket.AF_INET6, addr)
-        return True
-    except OSError:
-        return False
-
-
-# [START gae_flex_datastore_app]
-@app.route("/")
-def index():
-    ds = datastore.Client()
-
-    user_ip = request.remote_addr
-
-    # Keep only the first two octets of the IP address.
-    if is_ipv6(user_ip):
-        user_ip = ":".join(user_ip.split(":")[:2])
-    else:
-        user_ip = ".".join(user_ip.split(".")[:2])
-
-    entity = datastore.Entity(key=ds.key("visit"))
-    entity.update(
-        {
-            "user_ip": user_ip,
-            "timestamp": datetime.datetime.now(tz=datetime.timezone.utc),
-        }
-    )
-
-    ds.put(entity)
-    query = ds.query(kind="visit", order=("-timestamp",))
-
-    results = []
-    for x in query.fetch(limit=10):
-        try:
-            results.append("Time: {timestamp} Addr: {user_ip}".format(**x))
-        except KeyError:
-            print("Error with result format, skipping entry.")
-
-    output = "Last 10 visits:\n{}".format("\n".join(results))
-
-    return output, 200, {"Content-Type": "text/plain; charset=utf-8"}
-
-
-# [END gae_flex_datastore_app]
-
-
-@app.errorhandler(500)
-def server_error(e):
-    logging.exception("An error occurred during a request.")
-    return (
-        """
-    An internal error occurred: <pre>{}</pre>
-    See logs for full stacktrace.
-    """.format(
-            e
-        ),
-        500,
-    )
-
-
-if __name__ == "__main__":
-    # This is used when running locally. Gunicorn is used to run the
-    # application on Google App Engine. See entrypoint in app.yaml.
-    app.run(host="127.0.0.1", port=8080, debug=True)
diff --git a/appengine/flexible_python37_and_earlier/datastore/main_test.py b/appengine/flexible_python37_and_earlier/datastore/main_test.py
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-# Copyright 2015 Google LLC.
-#
-# 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.
-
-import main
-
-
-def test_index():
-    main.app.testing = True
-    client = main.app.test_client()
-
-    r = client.get("/", environ_base={"REMOTE_ADDR": "127.0.0.1"})
-    assert r.status_code == 200
-    assert "Last 10 visits" in r.data.decode("utf-8")
diff --git a/appengine/flexible_python37_and_earlier/datastore/noxfile_config.py b/appengine/flexible_python37_and_earlier/datastore/noxfile_config.py
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-# Copyright 2023 Google LLC
-#
-# 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.
-
-# Default TEST_CONFIG_OVERRIDE for python repos.
-
-# You can copy this file into your directory, then it will be imported from
-# the noxfile.py.
-
-# The source of truth:
-# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/noxfile_config.py
-
-TEST_CONFIG_OVERRIDE = {
-    # You can opt out from the test for specific Python versions.
-    # Skipping for Python 3.9 due to pyarrow compilation failure.
-    "ignored_versions": ["2.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"],
-    # Old samples are opted out of enforcing Python type hints
-    # All new samples should feature them
-    "enforce_type_hints": False,
-    # An envvar key for determining the project id to use. Change it
-    # to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a
-    # build specific Cloud project. You can also use your own string
-    # to use your own Cloud project.
-    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
-    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
-    # A dictionary you want to inject into your test. Don't put any
-    # secrets here. These values will override predefined values.
-    "envs": {},
-}
diff --git a/appengine/flexible_python37_and_earlier/datastore/requirements-test.txt b/appengine/flexible_python37_and_earlier/datastore/requirements-test.txt
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-pytest==8.2.0
diff --git a/appengine/flexible_python37_and_earlier/datastore/requirements.txt b/appengine/flexible_python37_and_earlier/datastore/requirements.txt
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-Flask==3.0.3; python_version > '3.6'
-Flask==2.3.3; python_version < '3.7'
-google-cloud-datastore==2.20.2
-gunicorn==23.0.0
-Werkzeug==3.0.3