🚀 Building Your Own CLI in Python: A Step-by-Step Guide!

I’ve created a tutorial series on how to build your own Command Line Interface (CLI) in Python! Whether you're a beginner or an advanced developer, this guide will help you master CLI development step by step.

⚡ What You'll Learn:

✅ Using argparse for argument handling

✅ sys module for command-line input

✅ Click for building user-friendly CLIs

✅ Typer for modern and intuitive CLI apps

🚀 CLI Library Comparison: Typer vs Click vs Argparse vs sys.argv

📌 CLI Library Comparison Table

Feature	Typer 🚀	Click ⚡	argparse 🔧	sys.argv 📝
Ease of Use	✅ Easiest	🔸 Medium	🔸 Medium	❌ Hard
Built-in Help (--help)	✅ Yes	✅ Yes	✅ Yes	❌ No
Type Hints Support	✅ Yes	❌ No	❌ No	❌ No
Automatic Validation	✅ Yes	✅ Yes	✅ Yes	❌ No
Default Values Support	✅ Yes	✅ Yes	✅ Yes	❌ No
Named Arguments (--option value)	✅ Yes	✅ Yes	✅ Yes	❌ No
Required Arguments	✅ Yes	✅ Yes	✅ Yes	❌ No
Subcommands Support	✅ Yes	✅ Yes	✅ Yes	❌ No
Good for Complex CLIs	✅ Yes	✅ Yes	✅ Yes	❌ No
Best for Simple Scripts	🔸 Medium	🔸 Medium	✅ Yes	✅ Best
Third-Party Dependency	✅ Yes	✅ Yes	❌ No	❌ No
Use Full Math Problems	✅ Yes	✅ Yes	✅ Yes	None

📌 Summary: Which One to Choose?

✅ Use Typer if → You love type hints, want modern Python support, and need an easy-to-use CLI. ✅ Use Click if → You want a powerful, flexible CLI without type hints. ✅ Use argparse if → You prefer a built-in, standard Python library for CLIs. ✅ Use sys.argv if → You need basic CLI support with minimal code.

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📌 Stay tuned for more episodes! 🔗 GitHub: https://github.com/LegendCoder505/terminal-in-python

🎮 Discord Server (Still in Progress): https://discord.gg/rDv3WQaAg9