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Jacob Bromwell® serves affluent customers in 75+ countries, including U.S. Working with SQLAlchemy’s modeled data inside your programs is very convenient. However, the REST API works with JSON data, and here you can run into an issue with the SQLAlchemy model. Without the timestamp source information, you couldn’t do any date and time comparisons or any math at all. The source, or zero time, is a line running from Earth’s north to south pole through the UK.
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- Using SQLAlchemy allows you to think in terms of objects with behavior rather than dealing with raw SQL.
- SQLAlchemy is a big project and provides a lot of functionality to work with databases using Python.
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- Without the timestamp source information, you couldn’t do any date and time comparisons or any math at all.
In this section, you’ll connect your API with the database, so you use your existing endpoints with the database to manage people. If you want to recap how you built the API endpoints, then you can hop over to part one of this tutorial series. You remove the datetime import, the get_timestamp() function, and the PEOPLE dictionary. In exchange, you add objects from config and models that you’ll use from now on. In this section, you’ll check in with the Flask REST API project that you’re working on.
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You’re going to use SQLite as the database engine to store the PEOPLE data. SQLite is a widely used relational database management system that doesn’t need a SQL server to work. SQLAlchemy provides an object-relational model , which stores each Python object to a database representation of the object’s data.
SQLAlchemy will sanitize user data for you before creating SQL statements. It’s another big advantage and a reason to use SQLAlchemy when working with databases. When you interact with a database in your Python code, you may think twice about whether you want to write pure SQL commands.
Connecting the Database With Your API
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- In the first part, you used Flask and Connexion to create a REST API providing CRUD operations to an in-memory structure called PEOPLE.
- In this section, you’ll add a proper database to your Flask project to fix these shortcomings.
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Line 3 imports the datetime object from the datetime module that comes with Python. This gives you a way to create a timestamp in the Person class in lines 11 to 13. The config.py module is, as the name implies, where all of your configuration information is created and initialized. In this file, you’re going to configure Flask, Connexion, SQLAlchemy, and Marshmallow. Models.py is the module where you’ll create SQLAlchemy and Marshmallow class definitions. In this section, you’ll leverage SQLAlchemy for help in communicating with your database and connecting people.db to your Flask app.
Before continuing, install the dependencies by following the instructions listed in the provided README.md file. Actually it does not stream on html page.It loads the html page but not displaying the video i want. Sign up for Seeker’s newsletter and get all our cool space videos, inspirational conservation stories, and health explainers right to your inbox.