ArjanCodes
20 minutes
Refactoring Command Line Shell Refactoring Algorithms in Python Part 2
Refactoring a command-line application toward clean architecture applies separation of concerns and single-source-of-truth principles: consolidate related data (such as documentation and algorithm registries) in one place, hide low-level data structures behind a small API layer, make each command responsible for its own argument validation, and keep the generic shell engine separate from application-specific commands through a plug-in style registration interface. Replacing a heavyweight class hierarchy with simple functions and a registry mapping command names to handlers lowers complexity and duplication. This belongs to software design and refactoring, drawing on modularity, abstraction layers, and registry/plug-in architecture.