Modular application

Currently, your folder structure should look like the following (take a look at the code provided for the previous chapter):

./ 
  config.py 
  database.db 
  main.py 
  manage.py 
  env/ 
  migrations/ 
    versions/ 
  templates/ 
    blog/ 

To convert our code into a more modular application, our files will be structured as follows:

./ 
  manage.py
  main.py
  config.py 
 database.db 
  webapp/ 
    __init__.py
    blog/
      __init__.py 
      controllers.py
      forms.py
      models.py
    main/
      __init__.py
      controllers.py
    templates/ 
      blog/ 
  migrations/ 
    versions/ 

The first change to make is to create a folder in your application that will hold the module. In this example, it will be called webapp.

Next, for each module in our application, we will create a respective Python module. If the module is a classic web application...