# 4. Develop, Test, & Refactor the App 🔁 %% Vid: youtu.be/X3jw1JVNdPE %% Take a look at the following: - [[Development Methodologies]] - [[Design Patterns]] - [[Design Principles]] - [[Python Style Guide]] - [[Git Workflow]] - [[Design Principles]] - [[Types of Testing]] - [[Refactoring Techniques]] #dev #python