Flask tutorial samples (GoogleCloudPlatform#391)

Author: Jon Wayne Parrott

appengine/standard/flask/hello_world/.gitignore

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+lib

appengine/standard/flask/hello_world/README.md

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+# App Engine Standard Flask Hello World
+
+This sample shows how to use [Flask](http://flask.pocoo.org/) with Google App
+Engine Standard.
+
+Before running or deploying this application, install the dependencies using
+[pip](http://pip.readthedocs.io/en/stable/):
+
+    pip install -t lib -r requirements.txt
+
+For more information, see the [App Engine Standard README](../../README.md)

appengine/standard/flask/hello_world/app.yaml

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+runtime: python27
+api_version: 1
+threadsafe: true
+
+handlers:
+- url: /.*
+  script: main.app

appengine/standard/flask/hello_world/appengine_config.py

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+# Copyright 2016 Google Inc.
+#
+# 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.
+
+from google.appengine.ext import vendor
+
+# Add any libraries installed in the "lib" folder.
+vendor.add('lib')

appengine/standard/flask/hello_world/main.py

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+# Copyright 2016 Google Inc.
+#
+# 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.
+
+# [START app]
+import logging
+
+from flask import Flask
+
+
+app = Flask(__name__)
+
+
+@app.route('/')
+def hello():
+    return 'Hello World!'
+
+
+@app.errorhandler(500)
+def server_error(e):
+    # Log the error and stacktrace.
+    logging.exception('An error occurred during a request.')
+    return 'An internal error occurred.', 500
+# [END app]

appengine/standard/flask/hello_world/main_test.py

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+# Copyright 2016 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.
+
+import pytest
+
+
+@pytest.fixture
+def app():
+    import main
+    main.app.testing = True
+    return main.app.test_client()
+
+
+def test_index(app):
+    r = app.get('/')
+    assert r.status_code == 200

appengine/standard/flask/hello_world/requirements.txt

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+Flask==0.11

appengine/standard/flask/tutorial/.gitignore

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+lib

appengine/standard/flask/tutorial/README.md

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+# App Engine Standard Flask Tutorial App
+
+This sample shows how to use [Flask](http://flask.pocoo.org/) to handle
+requests, forms, templates, and static files on Google App Engine Standard.
+
+Before running or deploying this application, install the dependencies using
+[pip](http://pip.readthedocs.io/en/stable/):
+
+    pip install -t lib -r requirements.txt
+
+For more information, see the [App Engine Standard README](../../README.md)

appengine/standard/flask/tutorial/app.yaml

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+runtime: python27
+api_version: 1
+threadsafe: true
+
+# [START handlers]
+handlers:
+- url: /static
+  static_dir: static
+- url: /.*
+  script: main.app
+# [END handlers]