tarball.tar.gz

POSTGRES_USER

POSTGRES_PASSWORD

POSTGRES_HOSTNAME

APPLICATION_DB

POSTGRES_PORT

POSTGRES_DB

Python Execution

Flask

Flask + Postgres

Python Test

Clean architecture is a software design methodology that separates the processes of an application into discrete steps instead of presenting them as “spaghetti code.” With the versatility of Python, software engineers can build performant, modular applications quickly using the Flask framework.

This course will help you build better applications using the principles of clean architecture. You’ll start with an introduction to data flow in clean systems and learn about the advantages of layered architectures. Next, you’ll learn system components and the connections between application layers. You’ll then design and build a clean system using Python by layering components in guided coding exercises. Finally, you’ll learn how to add functional components for the web, handle errors, and work with external databases using both Postgres and MongoDB. At each step, you’ll use test-driven development practices to ensure robust functionality.

Clean Architecture in Python

A use case implements a very specific part of the business logic

A use case implements business logic in its entirety.

Business logic is a process, and the use case is its implementation.

The use case is a process, and business logic is its implementation.

**(Select all that apply.)** Which statements accurately describe the relationship between a use case and business logic?

(Select all that apply.) Which statements accurately describe the relationship between a use case and business logic?

Clean architecture ________ the coupling between components of the system.

Clean architecture ________ the coupling between components of the system.

**(True or False)** In clean architecture, the storage system must be a SQL database.


(True or False) In clean architecture, the storage system must be a SQL database.

The complexity of the system reduces, which improves the testability.

Each component can be disconnected and tested in isolation.

How does layered architecture improve the testability of a system? 

How does layered architecture improve the testability of a system?

Components depend on the specific implementation instead of the interfaces.

Components depend on the interfaces instead of the specific implementation.

It wraps the called object with a standard interface.

It introduces loose coupling between the components of the system.

**(Select all that apply.)** Which statements about inversion of control are correct?

(Select all that apply.) Which statements about inversion of control are correct?

Take this quiz to check your understanding of clean architecture.

Get Started

A Day in the Life of a Clean System

Components of Clean Architecture

A Simple Coding Example

Add a Web Application

Error Management

Integration with a Real External System Postgres

Integration with a Real External System MongoDB

Run a Production-ready System

Appendix

Quiz