5 Python CLI Patterns I Use in Every Project (With Real Code)

After building Folder Intelligence — a Python CLI that reads file contents to organize them — I've refined a set of patterns I now use in every project. These aren't fancy abstractions. They're practical building blocks that make CLIs feel professional and maintainable. Here are the 5 patterns, with real code from my projects. 1. Rich Progress Bars Instead of print() The first thing users notice about your CLI is feedback. Bare print() calls feel amateurish. The rich library makes it trivial to add beautiful progress output. from rich.progress import Progress , SpinnerColumn , TextColumn from rich.console import Console console = Console () def process_files ( files ): with Progress ( SpinnerColumn (), TextColumn ( " [progress.description]{task.description} " ), transient = True , ) as progress : task = progress . add_task ( " Processing files... " , total = len ( files )) for f in files : do_something ( f ) progress . advance ( task ) console . print ( " [bold green]Done![/bold green]