🌍 Adding Internationalization (i18n) in FastAPI If you're building a multi-lingual API with FastAPI, it's essential to support internationalization. In this guide, we'll use the python-i18n library — a simple and effective tool for managing translations in Python using JSON files. 📦 Step 1: Install python-i18n pip install python-i18n 📁 Step 2: Create Locale Files Create a locales directory and add your language JSON files: locales/ ├── en.json └── fr.json en.json: { "greeting": "Hello" } fr.json: { "greeting": "Bonjour" } ⚙️ Step 3: Configure i18n in FastAPI import i18n from fastapi import FastAPI, Request app = FastAPI() # Load translation files i18n.load_path.append('locales') i18n.set('fallback', 'en') 🌐 Step 4: Detect Language from Request @app.middleware("http") async def add_language_to_request(request: Request, call_next): lang = request.headers.get(...
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