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Twilio Verify Python Flask Quickstart

With just a few lines of code, your Python application can verify phone numbers and add an additional layer of security with Twilio Verify.

This Python Verify Quickstart will teach you how to do this using our Verify REST API, the Twilio Python helper library, and Python’s Flask microframework to ease development.

このクイックスタートでは、下記のことを学んでいきます:

  1. Twilioにサインアップ
  2. メッセージを送受信できるように開発環境をセットアップする
  3. Send your first SMS phone verification
  4. Check verification codes

Twilioにサインアップ

If you already have a Twilio account, you’re all set here! Feel free to jump to the next step.

Before you can send an SMS from Python, you'll need to sign up for a Twilio account or sign into your existing account.

You can sign up for a free Twilio trial account here.

  • When you sign up, you'll be asked to verify your personal phone number. This helps Twilio verify your identity and also allows you to send test verification messages to your phone from your Twilio account while in trial mode. This phone verification step is exactly what you'll learn how to build in this tutorial!
  • Once you verify your number, you'll be asked to create a project. For the sake of this tutorial, you can click on the "Learn and Explore" template. Give your project a name, or just click "skip remaining steps" to continue with the default.
  • Once you get through the project creation flow, you'll arrive at your project dashboard in the Twilio Console. This is where you'll be able to access your Account SID, authentication token, create a verification service, and more.

Do I need a phone number?

If you've sent SMS with Twilio in the past, you might remember needing to buy a phone number. With Twilio Verify, we take care of that for you! The Verify API selects the best routes for quickly and reliably delivering verification codes globally.

Now that you have a Twilio account and a verification service, you can start writing some code! To make things even easier, we'll next install Twilio's official helper for Python applications.

PythonとTwilioヘルパーライブラリーをインストールする

If you’ve gone through one of our other Python Quickstarts already and have Python and the Twilio Python helper library installed, you can skip this step and get straight to sending your first verification.

To start a phone verification, you’ll need to have Python and the Twilio Python helper library installed.

Pythonをインストールする

あなたがMacやLinuxマシン上にある場合、あなたはおそらくすでにPythonがインストールされています。 ターミナルを開いて下記のコマンドを入力することでこれを確認できます:

python --version

下記のように表示されます:

$ python --version
Python 3.4  # Python 2.7+ is okay too

Windows users can follow this excellent tutorial for installing Python on Windows, or follow the instructions from Python's documentation.

TwilioのPython SDKではPython 2およびPython 3の双方に対応しています。 このクイックスタートはいずれのバージョンでも進められますが、Python 2のみと互換性のある特定のライブラリーがプロジェクトで必要な場合を除き、Twilioを使用する今後のプロジェクトにはPython 3のご使用を推奨します。

検証アプリケーションをクローンおよびセットアップする

Start by cloning our Flask repository.

git clone git@github.com:TwilioDevEd/verify-v2-quickstart-python.git

If you don't have git installed or prefer to download the source code you can grab a zip file of the project here.

Set up your virtual environment and install dependencies

If you're not familiar with Python virtual environments, follow our tutorial for setting up your local Python environment. Navigate into the project folder and create your virtual environment.

cd verify-v2-quickstart-python

virtualenv venv
source venv/bin/activate

pip install -r requirements.txt

Copy .env.example to .env. This is where we'll store sensitive data in environment variables.

cp .env.example .env

Run the application

export FLASK_APP=verify
export FLASK_ENV=development
flask init-db
flask run

Or on Windows cmd:

set FLASK_APP=verify
set FLASK_ENV=development
flask init-db
flask run

If your credentials are set up correctly you'll soon get a message that the app is up!

Use the Flask Twilio Verify Demo

Navigate to http://localhost:5000/auth/register. You should see a registration form that looks like this:

sign up form with phone verification
Enter your phone number and choose which channel to request verification over. Finally hit the green Sign Up button and wait. You'll either receive a phone call or an SMS with the verification token. If you requested a phone call, as an additional security feature you may need to interact to proceed (the call will tell you to enter a number on the phone keypad).

Enter the token into the Verification entry form and click 'Verify':

verification entry form

これで、デモアプリケーションはTwilioの電話番号検証で保護されました! ログアウトして他のチャンネルもお試しいただけます。

関連トピック

Your demo app is now keeping fraudulent users from registering with your business and polluting your database. Next, check out all of the variables and options available to you in the Phone Verification API Reference. Also, to protect your customers in an ongoing manner (with this same codebase) try the Python Flask Authy Two-Factor Authentication Quickstart.

After that, visit the Docs for more Account Security demos and tutorials and web applications using all of Twilio's products.

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