rich

Rich excels at what it does—making terminal output beautiful and readable. From a security perspective, it's refreshingly low-risk since it's primarily output-focused. The library doesn't handle authentication, network requests, or cryptographic operations. Its main attack surface is input sanitization when rendering user-controlled content, and it handles this reasonably well with automatic escaping in most contexts.

The biggest security consideration is when rendering untruated markup or console output that could contain ANSI escape sequences. Rich does sanitize by default, but you need to be careful with `markup=True` on user input as it could lead to terminal injection attacks. The library doesn't expose sensitive information in exceptions—errors are typically straightforward Python tracebacks without leaking internals.

Dependency-wise, Rich has minimal required dependencies (markdown-it-py, pygments for syntax highlighting), which is good for supply chain risk. Updates are frequent and the maintainer is responsive. The main gotcha is that rendering complex tables or trees with untrusted data can cause performance issues, but that's more availability than confidentiality.

Rich is genuinely delightful to use in day-to-day development. The API design is exceptionally intuitive - you can often guess the right method name without checking docs. The Console object is your main entry point, and everything flows naturally from there. Type hints are comprehensive and accurate, making IDE autocomplete incredibly helpful. You'll rarely need to context-switch to documentation.

Error messages are clear and actionable. When you pass invalid markup or misconfigure a table, Rich tells you exactly what's wrong and often suggests fixes. The library gracefully handles edge cases like terminal size changes and unsupported color modes without requiring configuration.

Documentation is outstanding with a perfect balance of conceptual explanations and practical examples. The live examples in the docs let you see output immediately. Migration between versions has been smooth - the maintainer clearly values backward compatibility. Small touches like automatic color downgrading for limited terminals and sensible defaults mean you can start with a single line of code and progressively enhance as needed.

Rich has become my go-to for any terminal output beyond basic print statements. The API is remarkably intuitive - Console() gives you everything you need, and methods like print(), log(), and rule() work exactly as you'd expect. Type hints are comprehensive throughout, making IDE autocomplete incredibly helpful. You rarely need to reference docs because the API surface is so well-designed.

The component library is excellent: Tables, Progress bars, Tree structures, and Syntax highlighting all work with minimal configuration but offer deep customization when needed. Error messages are clear and actionable - if you pass invalid markup or misconfigure a table, you get helpful feedback immediately. The inspect() function is particularly useful for debugging, letting you pretty-print any Python object with rich formatting.

Documentation is thorough with extensive examples for every feature. The library handles edge cases gracefully - terminal detection, color support fallbacks, and Unicode handling all work automatically. Performance is solid even with heavy output. My only gripes are that some advanced customization requires diving into internal classes, and the markup syntax takes a moment to memorize.