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Build Your First AI-Powered App: A Step-by-Step Tutorial with OpenAI & Python

1. What You’ll Build & Why It Matters

• Project overview: A command-line AI assistant that answers questions, summarizes text, and generates creative content using the OpenAI API.
• Real-world use case: Automate customer support drafts, brainstorm marketing copy, or build a personal research helper — all with less than 100 lines of code.
• Key skills you’ll learn: API authentication, prompt engineering, handling streaming responses, and basic error handling in Python.

2. Prerequisites & Environment Setup

• Tools you need: Python 3.9+, a code editor (VS Code recommended), and an OpenAI account with API access (free credits available).
• Install dependencies: Run pip install openai python-dotenv — we’ll keep the API key secure using a .env file.
• Get your API key: Step-by-step

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