Code Examples: Turning Python Scripts Into Production Systems
In my previous article, From Script to Production: What Python Tutorials Don’t Teach , I explained the mindset shift required to move beyond beginner-level Python. This post is the practical companion. Here, we’ll walk through concrete examples that show the transition From: Script-style code To production-ready structure ❌ Tutorial Version pip install requests python app.py That’s fine for learning. It’s chaos in production. ✅ Production Version python -m venv .venv source .venv/bin/activate # Windows: .venv\Scripts\activate pip install -r requirements.txt requirements.txt requests==2.31.0 python-dotenv==1.0.1 Better yet, use pyproject.toml: [project] name = "order-service" version = "0.1.0" dependencies = [ "requests==2.31.0", "python-dotenv==1.0.1" ] Why this matters: Production is about determinism. Same dependencies. Same versions. Same behavior. 2️⃣ Stop Using print() — Start Logging ❌ Script Style print("Fet...