This sample demonstrates how to use the Google Cloud Natural Language API on the App Engine Standard Environment.

This app allows users to input text, which is sent to the Google Cloud Natural Language API. The frontend of the application displays information retrieved from the Natural Language API including sentiment analysis, entity detection, and entity sentiment.

1. Create a project with the Google Cloud Platform Console Cloud Resource Manager.
2. Make note of your project ID, which may be different than your project name.
3. Make sure to Enable Billing for your project.

1. Go to the Google Cloud Platform console
2. Click the button in the top left, select APIs & services
3. Click Enable APIs and Services at the top
4. Search for Natural Language, click the first result, then click the Enable button.

Download the Google Cloud SDK command line tool, also known as gcloud.

Initialize gcloud, selecting your Google account and project ID:

gcloud init

Run the following command to clone the Github repository:

git clone https://github.com/ryanmats/gcp-hackathon-demos.git

Change directory to the sample code location:

cd gcp-hackathon-demos/language

Set up a service account via the following instructions:

1. Visit the Google Cloud Platform console
2. Search Service Accounts on the top search bar, click on Service accounts
3. Click the Create Service Account button at the top.
4. Give your service account a name and click CREATE.
5. For service account permissions, click Select a role and choose Project > Owner.
6. Click CONTINUE
7. Click CREATE KEY, and click CREATE to download a JSON service account key to your computer.
8. Click DONE to finish creating your service account.
9. Save the generated service account key JSON file to somewhere on your computer and rename it to key.json.

In your terminal, set the GOOGLE_APPLICATION_CREDENTIALS variable to point to the service account key location:

export GOOGLE_APPLICATION_CREDENTIALS=/path/to/your/service/account/key.json

Set up your virtual environment:

virtualenv env

Note: If you do not already have virtualenv installed, run sudo easy_install pip and then pip install virtualenv.

Enter your virtual environment:

source env/bin/activate

Install dependencies:

pip install -r requirements.txt

Test your application locally:

python main.py

Visit localhost:8080 to view your application running locally. Press Control-C from command line when you are finished.

When you are ready to leave your virtual environment:

deactivate

Deploy your application to App Engine (should take <1 minute). When prompted to choose a region, choose the one that is closest to you geographically.

gcloud app deploy

• Google Cloud Natural Language API
• App Engine Standard Python 3.7 Quickstart Tutorial
• Documentation for Google Cloud Client Libraries for Python
• Flask Web Framework
• Generating Templates in Flask with Jinja2