Mastering Flask Web Development - Second Edition

Python packages

Flask SQLAlchemy can be used with multiple database engines, such as ORACLE, MSSQL, MySQL, PostgreSQL, SQLite, and Sybase, but we need to install additional specific packages for these engines. Now it is time to bootstrap our project by creating a new virtual environment for all our application's dependencies. This virtual environment will be used for our blogging application. Enter the following code:

$ virtualenv env

Then, in requirements.txt, add the following code to install the package:

flask-sqlalchemy

You will also need to install specific packages for your chosen database that will act as the connector for SQLAlchemy, so add the specific packages for your engine in requirements.txt, as shown in the following code. ...