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Managing the configuration: YAML File

Explore how to manage Flask API configurations effectively by using YAML files to organize environment-specific settings. Understand how to leverage environment variables for sensitive data and achieve consistency between development and production environments to avoid deployment issues.

We'll cover the following...

Setting up a YAML file

Here is how we’ll set up the config.yaml file to group configuration options together:

YAML
dev_lite:
  DB: sqlite:///books.db
dev_postgres:
  DB: postgres://localhost:5432/books

When subsequent lines in a YAML file are indented like this, it means the values are nested. This will be read as the following dictionary of dictionaries in Python:

{ 'dev_lite': { 'DB':'sqlite:///books.db' },
'dev_postgres': { 'DB':'postgres://localhost:5432/books' } }

The YAML file will be used to describe two different environments. In the dev_lite environment, which is the development environment using SQLite, the database connection string, DB ...