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Python Programming Blueprints

You're reading from   Python Programming Blueprints Build nine projects by leveraging powerful frameworks such as Flask, Nameko, and Django

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Product type Paperback
Published in Feb 2018
Publisher Packt
ISBN-13 9781786468161
Length 456 pages
Edition 1st Edition
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Authors (3):
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Marcus Pennington Marcus Pennington
Author Profile Icon Marcus Pennington
Marcus Pennington
Pierluigi Riti Pierluigi Riti
Author Profile Icon Pierluigi Riti
Pierluigi Riti
Daniel Furtado Daniel Furtado
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Daniel Furtado
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Table of Contents (11) Chapters Close

Preface 1. Implementing the Weather Application FREE CHAPTER 2. Creating a Remote-Control Application with Spotify 3. Casting Votes on Twitter 4. Exchange Rates and the Currency Conversion Tool 5. Building a Web Messenger with Microservices 6. Extending TempMessenger with a User Authentication Microservice 7. Online Video Game Store with Django 8. Order Microservice 9. Notification Serverless Application 10. Other Books You May Enjoy

Creating a Flask server


We will now create a new Flask web server, which will replace our Nameko Web Server. Flask is better suited to handling web requests than Nameko and comes with a lot more baked in while still being fairly lightweight. One of the features we will take advantage of is Sessions, which will allow our server to keep track of who's logged in. It also works with Jinja2 for templating, meaning that our existing template should already work.

Start by adding flask to our base.in file, then pip-compile and install (version 0.12.2 at the time of writing) using the same process as earlier.

Getting started with Flask is quite straightforward; we will start by creating our new home page endpoint. Within your temp_messenger directory, create a new file, web_server.py , with the following:

from flask import Flask, render_template # ① 
 
app = Flask(__name__) # ② 
 
@app.route('/') # ③ 
def home(): 
    return render_template('home.html') # ④ 
  1. We import the following from flask:
    • Flask...
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